Greasy Quartz (likely carved Milky Quartz or Aventurine)
Silicon Dioxide (SiO2)
Category
Browse metamorphic or sedimentary (with staining) specimens identified by the Rock Identifier community.
Greasy Quartz (likely carved Milky Quartz or Aventurine)
Silicon Dioxide (SiO2)
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
Ruby Zoisite
Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Milky Quartz with Mica inclusions
Quartz (Silicon Dioxide, SiO2)
Yellow Aventurine (specifically a carved crescent moon)
Silicon Dioxide (SiO2) with inclusions
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Smoky Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusions
Quartzite Cobble with Quartz Vein
Metamorphic Quartzite (SiO2)
Zoisite with Ruby
Anyolite (Ca2Al3(SiO4)3(OH) with Al2O3:Cr)
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
Quartzite
Quartzite (SiO2)
Pink Thulite (in Pumice-like texture)
Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Eclogite
Eclogite (Omphacite-Garnet Rock)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Granitic Pegmatite
Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide)
Quartzite
Quartzite (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
Eclogite
Eclogite (Omphacite + Pyrope)
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2)
Biotite (Mica)
Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2
Muscovite (Mica)
Muscovite - KAl2(AlSi3O10)(OH)2
Mica in Quartz Host
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Soapstone (Talc-Schist)
Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Quartzite
Metamorphic Quartz (SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Biotite KAl2(AlSi3O10)(OH)2)