Mineral Health

Quartz Nut

SiO2 (Silicon Dioxide)

Kidney Stone

Nephrolithiasis (Calcium Oxalate, Hydroxyapatite, or Uric Acid)

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Kidney Stone

Calcium Oxalate (CaC2O4), Uric Acid, or Struvite

Aquamarine

Beryl (Be3Al2Si6O18)

Blue Tiger's Eye (Hawks Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

Fossilized Coral

Scleractinia (Agatized or Calcite replaced)

Green Jasper

Silicon Dioxide (SiO2) with iron silicate inclusions

Chevron Amethyst

Silicon Dioxide (SiO2) with iron impurities

Serpentine

(Mg,Fe)3Si2O5(OH)4

Rose Quartz

Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Ruby (Pink to Red Corundum)

Al2O3 (Corundum with Chromium impurities)

Jade

Jadeite or Nephrite

Serpentinite

Serpentinite (Hydrated magnesium iron silicate)

Serpentine

(Mg,Fe)3Si2O5(OH)4

Yellow Jade

Jadeite or Nephrite (NaAlSi2O6 or Ca2(Mg,Fe)5Si8O22(OH)2)

Tree Agate

Chalcedony with Dendritic Chlorite (SiO2 with impurities)

Serpentinite (probable)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and relic olivine/pyroxene

Oyster Shell (Aragonite/Calcite)

Calcium Carbonate (CaCO3)

Actinolite

Ca2(Mg,Fe)5Si8O22(OH)2

Tumbled Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Serpentine (Serpentinite)

Antigorite, Lizardite, and Chrysotile: (Mg,Fe)3Si2O5(OH)4

Red Jasper

Silicon Dioxide (SiO2)

Hematite bead bracelet

Hematite (iron(III) oxide, Fe₂O₃), likely polished magnetic hematite or hematite-coated beads

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Serpentinite (likely antigorite-rich)

Serpentine-group rock; chiefly antigorite, lizardite, and/or chrysotile, approximately Mg3Si2O5(OH)4

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Chrysotile Serpentine (Asbestos in Matrix)

Chrysotile Mg3Si2O5(OH)4

Serpentine

Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)

Malachite

Malachite (Cu2(CO3)(OH)2 - a copper carbonate hydroxide mineral)

Serpentinite (likely)

Serpentinite, dominated by serpentine-group minerals (chrysotile, lizardite, or antigorite), commonly with magnetite and relict olivine/pyroxene

Staghorn Coral Specimen

Acropora cervicornis (Calcium Carbonate, CaCO3)

Jasper (specifically Bloodstone or Heliotrope variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chrysotile Asbestos

Chrysotile [Mg3Si2O5(OH)4]

Precious Red Coral

Corallium rubrum (Calcium Carbonate, CaCO3)

Serpentine-rich metamorphic rock

Serpentinite, likely antigorite/lizardite with magnetite and possible chlorite or talc

Likely serpentine or greenstone pebble

Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; possibly chlorite-rich greenstone

Serpentine (likely bowenite)

Serpentine-group minerals, chiefly antigorite and lizardite; often with magnetite and carbonate

Serpentinized ultramafic rock (serpentinite)

Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile/antigorite), with possible magnetite, talc, and brucite

Serpentine

Serpentine Group Minerals (e.g., Antigorite, Chrysotile, Lizardite)

Unknown Organic Object (likely a berry or fruit)

Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.

Chrysotile Asbestos

Chrysotile (Mg3Si2O5(OH)4)