Epidote (or Epidote-rich rock)
Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).
Category
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Epidote (or Epidote-rich rock)
Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Sapphire
Corundum (Al2O3)
Feldspar
Feldspar (Orthoclase/Microcline)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
Fluorite Bracelet (light green beads) and possibly Lavender Jadeite (purple bead)
Fluorite: CaF₂ (Calcium Fluoride); Jadeite: NaAlSi₂O₆ (Sodium Aluminum Silicate)
Yellow Sapphire
Corundum (Al2O3) with iron impurities
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
Pyrite
Iron sulfide (FeS2)
Apatite
Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Red Garnet (likely Almandine or Pyrope)
Garnet group: X3Y2(SiO4)3 (e.g., Almandine: Fe3Al2Si3O12)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline) KAlSi3O8
Potassium Feldspar (Orthoclase)
KAlSi3O8
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
Blue Sapphire
Corundum (Al2O3) with iron and titanium impurities
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Pyrite
Iron Disulfide (FeS2)
Magnetite / Ironstone
Magnetite (Fe3O4)
Muscovite Mica (Golden/Yellow variety)
KAl2(AlSi3O10)(F,OH)2
Garnet (likely Pyrope or Almandine)
Garnet Group (complex nesosilicate minerals, e.g., Pyrope Mg3Al2(SiO4)3, Almandine Fe3Al2(SiO4)3, Spessartine Mn3Al2(SiO4)3, Grossular Ca3Al2(SiO4)3, Andradite Ca3Fe2(SiO4)3, Uvarovite Ca3Cr2(SiO4)3). The vivid red color in the image strongly suggests Pyrope or Almandine.
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Milky Quartz
Silicon Dioxide (SiO2)
Ruby
Corundum (Al2O3 with Chromium traces)
Quartz crystals on matrix
Silicon dioxide (SiO2)
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
Magnetite
Magnetite (Fe3O4)
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Hematite
Iron (III) Oxide (Fe2O3)
Pyrite
Iron Disulfide (FeS2)
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
Labradorite (a variety of Feldspar)
Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Sodalite
Na8(Al6Si6O24)Cl2
Magnetite
Magnetite (Fe3O4)