Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
Category
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
Kyanite
Kyanite (Al2SiO5)
Jasper with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
Pyrite
Iron Disulfide (FeS2)
Blue Kyanite
Kyanite (Al2SiO5)
Quartz pebble / River stone
SiO2 (Silicon Dioxide)
Pyrite
Iron Sulfide (FeS2)
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Mixed Mineral and Fossil Collection
Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz Mineral
Silicon Dioxide (SiO2)
Hematite
Hematite (Α-Fe2O3)
Onyx Marble (Banded Calcite)
Calcite (Calcium Carbonate, CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)
Quartz
Silicon Dioxide (SiO2)
Quartz Fragment
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Educational Geologic Collection
Mixed Mineral and Rock Collection (Various compositions)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Quartz Geode
Silicon Dioxide (SiO2)
Opal
Hydrated Silica (SiO2·nH2O)
Opal
Hydrated Silica (SiO2·nH2O)
Gneiss
Metamorphic Gneiss
Almandine Garnet in Matrix
Almandine, Fe3Al2(SiO4)3
Milky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz (Citrine or Iron-Stained)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite in Quartzite/Graphite Matrix
Iron Sulfide (FeS2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)