You need protection that still lets some light through. Apache tears are obsidian nodules rounded by weathering until thin enough to become translucent at the edges. Grief can soften its own surface given time.
Apache tear is a grief stone. Not a "healing" stone in the sense of making the pain go away. A grief stone in the sense of: this stays with you while the pain is here....
Overview
The heart of the entry
Grief sometimes wants cover more than catharsis. Something dark enough to hold the feeling, rounded enough not to...
Mineralogy
Amorphous
Apache tear is obsidian. Volcanic glass. Silicon dioxide with traces of iron, aluminum, sodium, potassium, and...
Formation
How it forms
Amorphous system — earth conditions, structure, and place.
Crystal system diagram represents the general amorphous classification. Diagram created by Crystalis for educational reference.
What your body knows
Grief & Loss
Apache tear is a grief stone. Not a "healing" stone in the sense of making the pain go away. A grief stone in the sense of: this stays with you while the pain is here....
The Meaning
Apache Tear in the Crystalis dictionary
Grief sometimes wants cover more than catharsis. Something dark enough to hold the feeling, rounded enough not to cut.
Apache tears are nodules of obsidian worn into gentler shapes than the blade-like forms volcanic glass can also take. Same material. Different silhouette. The difference matters in the hand.
Stone Lore
Stories carried through time
Cultural notes are presented as tradition and historical context — stories carried through time.
Apache Peoples, American Southwest
The Tears That Turned to Stone
The story tells of a band of Apache warriors who, outnumbered by cavalry and facing certain capture, chose to ride their horses off the edge of a cliff near what is now Superior, Arizona, rather than surrender. When the women and families of the warriors learned what had happened, their grief was so profound, so beyond the capacity of the human body to hold, that the tears they shed crystallized as they hit the ground.
Dark, smooth, rounded stones. The earth herself received the grief and made it permanent. The geological feature is still called Apache Leap. The stones are still found there. And the story teaches: grief that deep does not disappear. It becomes something you can hold.
Ritual history
Tool, Mirror, Protector
Obsidian was a widely valued material in Indigenous tool-making across the Americas. Its conchoidal fracture produces edges sharper than surgical steel, used for blades, arrowheads, and scrapers for thousands of years. Archaeological...
Obsidian in Indigenous Practice
Historical note
Tezcatlipoca's Mirror
In Aztec tradition, obsidian was the material of Tezcatlipoca's smoking mirror, the divine instrument that revealed hidden truths. Obsidian mirrors and blades were central to ceremony, divination, and sacrifice. The stone's ability to hold...
Mesoamerican Traditions
Ritual history
The Gentle Obsidian
In modern crystal practice, apache tear is consistently distinguished from raw obsidian as the gentler option for emotional work. Where obsidian confronts, apache tear accompanies. Where obsidian mirrors everything, apache tear filters...
Contemporary Practice
Historical note
Apache Leap: The Origin
The most culturally significant source. Apache Leap, a cliff face east of Superior, Arizona, is both the geological source and the site of the story that named the stone. The volcanic flows in this region produced extensive perlitic...
Arizona, Superior
Earth Record
Mineralogy and formation
Apache tear is obsidian. Volcanic glass. Silicon dioxide with traces of iron, aluminum, sodium, potassium, and calcium, quenched from liquid to solid so rapidly that atoms never had time to arrange themselves into a crystal lattice. Where quartz is order, obsidian is arrested chaos. The magma froze mid-sentence.
Obsidian forms when silica-rich rhyolitic lava, typically 70-76% SiO₂, erupts and cools rapidly at the earth's surface. The high viscosity of this lava prevents atomic migration, so instead of growing crystals, the melt solidifies as glass. Obsidian is, in the strict sense, a supercooled liquid. It never completed the transition to solid. It is still, geologically speaking, in the process of becoming.
Here is where apache tears diverge from ordinary obsidian.
Crystal system diagram represents the general amorphous classification. Diagram created by Crystalis for educational reference.
Amorphous structure
Chemical Formula
SiO2 (+ trace oxides)
Crystal System
Amorphous
Mohs Hardness
5
Specific Gravity
2.35-2.45
Luster
Vitreous to resinous
Color
Black, dark brown (translucent when backlit)
IMA Status
rock
Type Locality
Picketpost Mountain area, Superior, Arizona, USA
IMA Number
Not IMA-approved
01
Mineral conditions gather
02
Structure begins to crystallize
03
Apache Tear records place and pressure
ArizonaNew MexicoNevada
Telling it apart
These Are Different Materials
Apache tear is frequently confused with tumbled obsidian, smoky quartz, and tektites. They share a dark appearance but are mineralogically and energetically distinct.
Energy: Gentle grief work, filtered truth, grounding during loss
Raw Obsidian
Material: Volcanic glass, same chemistry
Hardness: Mohs 5-5.5
Translucency: Typically opaque (unless very thin)
Shape: Sharp edges, conchoidal fracture, or carved/tumbled
Origin: Direct from lava flows
Energy: Confrontational truth, deep shadow work, psychic protection
Smoky Quartz
Material: Crystalline SiO₂ (quartz), trigonal system
Hardness: Mohs 7
Translucency: Yes, gray-brown
Shape: Hexagonal crystal points or massive
Origin: Natural irradiation of quartz
Energy: Grounding without grief, stress dissolution, practical centering
Tektite (Moldavite, etc.)
Material: Impact glass, formed by meteorite strike
Hardness: Mohs 5-6
Translucency: Varies by type
Shape: Irregular, splashed, aerodynamic
Origin: Melted terrestrial rock from impact
Energy: Transformation, rapid change, intensity
The practitioner distinction: If someone is in active grief and asks for a dark, grounding stone, apache tear is the prescription. Not obsidian (too confrontational), not smoky quartz (grounding without grief-specificity), not tektite (too much intensity). Apache tear is the stone that sits with you. The hardness test settles any identification question: apache tear (Mohs 5-5.5) will not scratch glass, while smoky quartz (Mohs 7) will.
Care & Maintenance
Spotting the real thing
Four tests. The first one is definitive.
Translucency test. Hold it to light. A real apache tear becomes translucent, showing dark amber-brown when backlit. This is the defining characteristic. If the stone remains completely opaque when held between your fingers and a bright light source, it is not an apache tear. It may be tumbled obsidian, black agate, or dyed glass, but it is not an apache tear. The translucency is not optional. It is the identity.
Hardness test. Apache tear is Mohs 5-5.5. It will NOT scratch glass (glass is approximately Mohs 5.5). If the stone scratches glass easily, you are holding smoky quartz (Mohs 7) or another crystalline mineral, not volcanic glass. If it scratches with difficulty or not at all, that is consistent with obsidian.
Surface texture. Natural apache tears have a slightly rough, matte surface from weathering out of perlite. They are not polished unless someone has tumbled them. The natural surface often shows small conchoidal fracture marks and may have traces of whitish perlite adhering to the exterior. Perfectly smooth, uniformly polished black stones sold as "apache tears" are more likely tumbled obsidian or black glass.
Weight and temperature. Volcanic glass is denser than it looks and feels cool in the hand, warming slowly. Plastic fakes warm instantly. The weight-to-size ratio of genuine obsidian glass is distinctive once you have held a few real specimens.
The loss is fresh. You swing between flooding and numbness, between too much feeling and no feeling at all. The world continues and you cannot understand how.
The stone provides a single point of continuity in a nervous system that has lost its reference points. Hold it in your closed fist. The smooth, rounded surface requires no orientation, no correct grip, no effort. The weight says: something is here. The warmth says: your body is still generating heat, still alive, still present. For someone oscillating between sympathetic flooding and dorsal collapse, a palm-held object provides the nervous system with a stable input that neither demands attention nor withdraws it.
Research on grief processing confirms that bereaved individuals oscillate between confronting and avoiding the loss. The stone holds space for both movements without judgment.
Shut down & far away
Frozen Grief: Dorsal Vagal Dominance
The loss happened months ago. Years ago. You have not cried. You function. You go to work. The grief sits somewhere below the surface like a lake under ice, and you walk across it every day pretending the ice will hold.
Apache tear's translucency practice is specifically designed for this state. Holding the stone to light and watching it shift from opaque to translucent is a somatic rehearsal for the grief process itself: what appears impenetrable becomes something you can see through. This is not a metaphor imposed on the stone. The stone teaches this physically. You hold it up. You see through it.
The body registers this before the mind names it. For frozen grief, where the loss has been encapsulated rather than processed, this gentle physical demonstration creates a neurological opening. The eyes see through darkness. The hands hold something that survived. The nervous system receives the signal: seeing through is possible.
The loss has not happened yet but you know it is coming. A diagnosis. A relationship ending in slow motion. A parent declining. You grieve what is still here, and the guilt of that grieving compounds the pain.
Anticipatory grief keeps the sympathetic nervous system on low-level alert indefinitely. The body braces for impact that has not arrived. Apache tear, held in the pocket and touched throughout the day, serves as what grief researchers call a continuing bond object: a physical anchor that acknowledges the loss-in-progress without requiring verbal processing. Touch the stone. Acknowledge silently: this is happening.
I am still here while it is happening. The stone's darkness, its weight, its refusal to be anything other than what it is: these qualities match the emotional state rather than contradicting it. Apache tear does not ask you to feel better. It asks you to feel what is true." apache-tear,4,mixed,Complicated Grief: Dysregulated Oscillation,"The loss was compounded. By guilt, by anger, by unfinished business, by the way it happened.
The grief is tangled with other emotions that prevent clean processing. You cannot grieve purely because the relationship was not pure.
Apache tear is considered gentler than raw obsidian for exactly this reason. Where obsidian is a mirror that shows you everything at once, apache tear reveals gradually. The translucency is partial, amber-brown, filtered. You see through it, but softly. For complicated grief, where the full weight of the loss includes anger, relief, shame, or betrayal, this filtered quality provides a safer container.
The stone does not demand that you process everything simultaneously. It holds one feeling at a time. Proprioceptive input from gripping the stone engages the same calming pathways documented in weighted modality research, reducing the dysregulated oscillation between flooding and shutdown that characterizes complicated grief responses.
These associations come from tradition and reflective practice — a way of working with the stone, not a medical prescription.
Somatic Practice
Simple ways to work with Apache Tear
◇
Hold
Carry Apache Tear in a pocket or place it over the heart center during a pause.
◌
Meditate
Let the stone become a quiet tactile anchor while the breath slows.
☽
Breathe
Breathe in softness. Breathe out tension. Keep the practice simple.
✎
Journal
Write with Apache Tear nearby to name the feeling without forcing a conclusion.
✋
Bodywork
Rest the stone near the chest, hand, or bedside as a reminder to soften.
⌂
Environment
Place it where you want a visual cue for care, repair, or steadiness.
Field Instruction
The Translucent Grief
Hold to the Light. Bring to the Chest. Breathe Into the Loss.
3 min protocol
1
Hold the apache tear between your thumb and forefinger. Raise it toward light. A window. A lamp. The sky. Watch the stone shift. In your palm it is black, opaque, a small piece of solid night. But between your fingers, backlit, it becomes translucent. Dark amber-brown. You can see through it. Stay here for 30 seconds. Let your eyes adjust. Let the stone teach you what it teaches everyone who holds it to the light: grief is not opaque. You can see through it.
2
Lower the stone to your sternum. Press it gently against the bone where your collarbones meet. Both hands over it if you need both hands. This is the cardiac plexus, and this stone, born from fire and shaped by patience, now rests on the part of your body that holds loss. Feel the weight. Feel the coolness becoming warmth. The stone is small but it is dense. Volcanic glass is heavier than it looks. Let it press.
3
Breathe: 5 counts in through the nose, 5 counts out through the mouth. Coherent breathing at 6 breaths per minute synchronizes heart rate variability with the respiratory cycle, gently lifting autonomic tone out of the dorsal freeze without triggering sympathetic alarm. On each exhale, let the breath carry whatever is ready to leave. If tears come, let them come. The stone was named for tears. It already holds every one.
4
After 3 minutes: notice what remains. The stone is warmer. Your body heat transferred into volcanic glass that has held its temperature for millions of years. Your chest may feel lighter. Or heavier. Both are correct. You did not fix the grief. You held it in your hands and breathed through it. You held it to the light and saw through it. That is the practice. That is enough.
Stone Intelligence
The fact that makes Apache Tear memorable
Obsidian forms when silica-rich rhyolitic lava, typically 70-76% SiO₂, erupts and cools rapidly at the earth's surface. The high viscosity of this lava prevents atomic migration, so instead of growing crystals, the melt solidifies as glass. Obsidian is, in the strict sense, a supercooled liquid.
It never completed the transition to solid. It is still, geologically speaking, in the process of becoming.
SCI
Effectiveness of sensory modulation
Australian Occupational Therapy Journal · 2022Read source
SCI
Elemental, isotopic, and geochronological variability in Mogollon-Datil volcanic province archaeological obsidian, southwestern USA
International Journal of Applied Glass Science · 2016Read source
SCI
Stillbirth at Term: Grief Theories for Care
Journal of Midwifery & Women's Health · 2020Read source
Ritual Use
From reference to practice
Apache Tear Properties: Nervous System States
Apache tear is a grief stone. Not a "healing" stone in the sense of making the pain go away. A grief stone in the sense of: this stays with you while the pain is here. In body-based practice, the stone's smooth, rounded form and comfortable weight provide tactile anchoring during the most destabilizing emotional states a human being can experience. The root chakra association is not decorative. When grief pulls the floor out, root work puts ground back under your feet.
Apache tear addresses four specific states, all of them rooted in loss. Different kinds of loss. Different nervous system responses to the same unbearable reality: something that was here is gone.
Porges, S.W. (2011). The Polyvagal Theory. W.W. Norton. Stroebe, M. & Schut, H. (1999). The dual process model of coping with bereavement. Death Studies, 23(3), 197-224.
Acute Grief: Oscillating Sympathetic / Dorsal
The loss is fresh. You swing between flooding and numbness, between too much feeling and no feeling at all. The world continues and you cannot understand how.
How apache tear helps
The stone provides a single point of continuity in a nervous system that has lost its reference points. Hold it in your closed fist. The smooth, rounded surface requires no orientation, no correct grip, no effort. The weight says: something is here. The warmth says: your body is still generating heat, still alive, still present. For someone oscillating between sympathetic flooding and dorsal collapse, a palm-held object provides the nervous system with a stable input that neither demands attention nor withdraws it.
Research on grief processing confirms that bereaved individuals oscillate between confronting and avoiding the loss. The stone holds space for both movements without judgment.
Sacred Match
Sacred Match prescribes Apache Tear when you report:
Grieving
Numb / "I can't feel it"
Bracing for loss
Guilty grief
Unprotected / raw
Holding it together
Sacred Match prescribes through physiological diagnosis, not preference. It queries the nervous system: current sensation, protective mechanism, and the biological need masked by both. When that triangulation reveals ground-loss (grief displacing the foundation, anticipatory collapse, or emotional numbness deployed as survival architecture) apache tear enters the protocol.
Grieving -> loss without container -> seeking something to hold
Pairings are treated like a recipe file: clear use, method, and safety.
Crystal Companion
Apache Tear + Amethyst
Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.
Crystal Companion
Apache Tear + Rhodonite
Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.
Crystal Companion
Apache Tear + Clear Quartz
Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.
Crystal Companion
Apache Tear + Black Tourmaline
Use when
You want to layer the primary intention with another supportive tone.
How to work with it
Place the stones together during meditation, journaling, or a short reset.
Safety
Use as a reflective practice tool, not as a medical substitute.
Rose Quartz
The essential grief pairing. Apache tear grounds the loss in the body (root chakra). Rose quartz opens the heart to receive comfort (heart chakra). Together they create a vertical channel: the grief has ground to stand on and a heart soft enough to feel it. Apache tear in the left hand (receiving the grief), rose quartz in the right (offering compassion to yourself). For the first weeks after a loss, this pairing does what words cannot.
Amethyst
Grief-induced insomnia pairing. Apache tear holds the grief. Amethyst calms the crown, quieting the replay loop that keeps you awake at 3am going over what happened, what you should have said, what you will never get to say. Place apache tear under the pillow (grounding) and amethyst on the bedside table (calming the mental spiral). The combination addresses both the emotional weight and the cognitive rumination of grief.
Black Tourmaline
Protection during vulnerability. Grief strips the energetic boundary. You are raw, open, absorbing everything. Black tourmaline rebuilds the perimeter while apache tear processes what is inside it. For funerals, for the days after a loss when you have to be around people and their well-meaning words land like stones on an open wound. Apache tear holds the grief. Black tourmaline holds the boundary.
Clear Quartz
Amplification and clarity. When the grief has softened enough that you want to understand it, clear quartz amplifies apache tear's translucency quality. The filtered truth becomes clearer truth. Not for the first wave. For the later stages, when you are ready to see what the loss is teaching you. Use only when the nervous system has stabilized.
Moss Agate
Renewal after loss. Apache tear accompanies the grief. Moss agate, with its internal garden of mineral dendrites, represents what grows after. For the stage of grief where you begin to notice that the world is continuing, that spring is coming even though you did not ask it to, that something green is pushing through. Apache tear honors what was lost. Moss agate honors what remains.
Pairing Cautions
Apache Tear + Moldavite: Avoid during active grief. Moldavite's high-intensity transformational energy combined with the emotional rawness that apache tear addresses can cause destabilization. Moldavite accelerates. Grief needs its own timeline. Experienced practitioners only, and only outside the acute grief window.
Apache Tear + Carnelian: Use carefully. Carnelian mobilizes sacral energy, which can feel intrusive during grief when the body is in conservation mode. If someone is in dorsal vagal shutdown (complete numbness, inability to feel), the combination may help restart emotional circulation. But if the person is already oscillating between flooding and numbness, adding sacral fire can tip toward overwhelm.
Care & Cleansing
How to keep Apache Tear in good condition
Water Safe?
Use caution
Brief contact may be tolerated, but softness, coatings, fractures, or mixed mineral content can make water exposure a risk.
Sunlight Safe?
Sunlight safe
Tolerates daylight; safe to charge or display in the sun.
Authenticity
What to check
Natural Apache Tear should usually feel cooler than plastic or resin on first touch and warm more slowly in the hand.
The #1 Question
Can Apache Tears Go in Water? Yes, with conditions
The Full Answer
Apache tears are volcanic glass, Mohs 5-5. 5, with no water-soluble minerals. Water will not dissolve them or chemically alter them in the timeframe of a brief cleansing rinse. Safe: 30-60 seconds under cool running water. Pat dry with a soft cloth. Avoid:
Thermal shock: Glass is susceptible to fracture from rapid temperature change.
Never move apache tear from hot to cold or cold to hot rapidly. Prolonged soaking: While chemically stable, obsidian glass can develop surface micro-fractures with extended water exposure over time, especially in areas where the glass is thinnest (edges of translucent zones). Salt water: Salt crystals can lodge in natural surface irregularities and expand, potentially causing micro-damage.
Ultrasonic cleaners: Vibration frequencies can exploit internal stress planes in volcanic glass. Better alternatives for regular cleansing: Moonlight (overnight), sage or palo santo smoke (30-60 seconds), selenite plate (4-6 hours), earth burial (24 hours), sound vibration (2-3 minutes). The earth burial method is particularly appropriate for apache tear given its earth element association and its origin story of tears falling to the ground.
Temperature
Natural Apache Tear should usually feel cooler than plastic or resin on first touch and warm more slowly in the hand.
Scratch logic
Use 5 on the Mohs scale as the check, not internet myths. A real specimen should behave in line with the hardness listed above.
Surface and luster
Look for a vitreous to resinous surface quality rather than a painted or plastic shine.
Weight and density
The listed specific gravity is 2.35-2.45. If a specimen feels unusually light for its size, it may deserve a second look.
My Field Guide
Your private record and next steps
Journal
Add this stone to your private collection, then log what happened when you worked with it.
Shared Notes
Read public practice logs and pattern notes from the Crystalis community.
When members save a public field note for this stone, it will appear here.
Frequently Asked
Questions people ask about Apache Tear
What is an apache tear?
An apache tear is a rounded nodule of volcanic obsidian glass, typically 1-5 cm in diameter, found weathering out of perlitic obsidian flows in the American Southwest. Chemically it is SiO2 plus various trace oxides, amorphous (no crystal structure), Mohs hardness 5-5. 5. What distinguishes apache tears from regular obsidian: they are translucent when held up to light. Black and opaque in reflected light, but hold one between your fingers and a light source and you see through it.
Dark amber-brown, like looking through smoked glass. That translucency is the defining feature and the foundation of every grief practice built around this stone.
What are apache tears used for?
Apache tears are used for grief processing, emotional protection during vulnerable periods, and grounding during loss. In somatic practice, the stone's smooth, rounded form and comfortable palm weight provide tactile anchoring during emotional flooding. The translucency practice (holding the stone to light) serves as a physical metaphor for the grief process itself: what appears completely dark becomes something you can see through. Traditionally associated with the root chakra and with earth and fire elements.
Can apache tears go in water?
Yes, briefly. Apache tears are volcanic glass (Mohs 5-5.5) with no water-soluble minerals. A quick rinse under cool running water for 30-60 seconds is safe. Avoid prolonged soaking, as obsidian glass can develop surface micro-fractures over time with repeated water exposure. Avoid thermal shock (hot to cold or vice versa). Better alternatives for regular cleansing: moonlight, smoke (sage, palo santo, cedar), selenite plate, or sound vibration.
What chakra is apache tear?
Apache tear is associated with the root chakra (Muladhara), the first energy center at the base of the spine. In somatic terms, this corresponds to the body's grounding and survival systems. When grief destabilizes the sense of safety, root chakra work addresses the foundation: I am here, I am alive, the ground is still beneath me. Apache tear also has secondary resonance with the heart chakra during active grief work, bridging the ground beneath you with the loss held in your chest.
How do apache tears form?
Apache tears form as nodules of unhydrated obsidian within perlite, a hydrated volcanic glass. When silica-rich rhyolitic lava cools rapidly, it forms obsidian. Over geological time, groundwater slowly hydrates the obsidian from the outside in, converting it to perlite. But some cores resist hydration, remaining as dense, glassy nodules surrounded by the softer, crumbly perlite matrix. When the perlite weathers and erodes, these resistant obsidian cores are released as the rounded, smooth stones known as apache tears. They are literally what survived.
What is the difference between apache tear and obsidian?
Apache tears are obsidian, but not all obsidian is an apache tear. Regular obsidian is typically opaque black and found in large masses or flows. Apache tears are small, rounded nodules (usually 1-5 cm) that weathered out of perlite deposits and are translucent when held to light. The translucency indicates the glass remained unhydrated while the surrounding obsidian absorbed water and became perlite.
In practice, apache tears are considered gentler than raw obsidian for emotional work. Obsidian is a mirror that shows you everything at once. Apache tear reveals slowly, in its own time.
Where are apache tears found?
Primarily in the American Southwest: Arizona (Superior, near the historic Apache Leap cliff), New Mexico (Mule Creek area, Grant County), and Nevada. The most culturally significant deposits are near Superior, Arizona, where the Apache legend originates. Geologically similar nodules (called marekanites) are found in volcanic regions worldwide, but the name 'apache tear' specifically refers to specimens from the American Southwest and carries the cultural weight of the Apache origin story.
How do you cleanse apache tears?
Five methods: (1) Moonlight, overnight on a windowsill, the gentlest and safest method. (2) Smoke cleansing with sage, palo santo, or cedar, 30-60 seconds. (3) Running water, brief cool rinse only, 30-60 seconds, pat dry. (4) Sound vibration with a singing bowl or tuning fork, 2-3 minutes. (5) Earth burial, place in dry soil for 24 hours, appropriate given the stone's earth element association. Avoid prolonged sunlight, which will not damage obsidian the way it fades quartz, but can heat glass rapidly and cause thermal stress.
Sources & Citations
Where this entry can be checked
Back Matter
Readable for people. Structured for AI search.
Sources stay visible in the page so readers, search engines, and answer systems can follow the evidence trail.
01
SCI
Effectiveness of sensory modulation
Machingura, T. et al. (2022). Effectiveness of sensory modulation. Australian Occupational Therapy Journal. [SCI]DOI 10.1111/1440-1630.12803
02
SCI
Elemental, isotopic, and geochronological variability in Mogollon-Datil volcanic province archaeological obsidian, southwestern USA
Shackley, M.S., Morgan, L., & Pyle, D. (2017). Elemental, isotopic, and geochronological variability in Mogollon-Datil volcanic province archaeological obsidian, southwestern USA. Geoarchaeology. [SCI]DOI 10.1002/gea.21672
03
SCI
Glass: The Geologic Connection
Glass, B.P. (2016). Glass: The Geologic Connection. International Journal of Applied Glass Science. [SCI]DOI 10.1111/ijag.12240
04
SCI
Stillbirth at Term: Grief Theories for Care
Black, B.P. (2020). Stillbirth at Term: Grief Theories for Care. Journal of Midwifery & Women's Health. [SCI]DOI 10.1111/jmwh.13108
05
SCI
Subaqueous felsic volcanic sequence
Li, W. et al. (2023). Subaqueous felsic volcanic sequence. Geological Journal. [SCI]DOI 10.1002/gj.4812
06
SCI
Psychophysiological effects of slow-paced breathing
Laborde, S. et al. (2021). Psychophysiological effects of slow-paced breathing. Psychophysiology. [SCI]DOI 10.1111/psyp.13952
