Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Category
Browse anthropogenic (man made industrial deposit) specimens identified by the Rock Identifier community.
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Quartzite (River Stone)
Quartzite (mainly SiO2 with iron oxide staining)
Diamond
Diamond (C)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Green Moss Agate
Agate (Silicon Dioxide - SiO2 with inclusions of Manganese/Iron oxides)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2)
Granite
Granite (Felsic Plutonic Rock)
Fluorite (translucent octahedral crystal)
Calcium fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Red Jasper
Silicon Dioxide (SiO2)
Limonite with Hematite
Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Amethyst
Quartz variety; chemical formula: SiO₂ (silicon dioxide) with Fe³⁺ impurities
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
Fluorite (Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Ferruginous Sandstone (Gerrit)
Arenite with Iron Oxide cementation
Jasper (specifically Yellow Jasper and Red Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Granite Pebble (River Rock)
Phaneritic Felsic Igneous Rock
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Quartz / Quartzite Fragment
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Crazy Lace Agate
Silicon Dioxide (SiO2) with iron and aluminum inclusions
Granite (with Quartz and Mica)
Phaneritic Felsic Igneous Rock
Bauxite (Pisolitic Bauxite)
Bauxite (mixture of Hydrous Aluminum Oxides)
Sandstone (Quartzose)
Arenite (predominantly SiO2)
Sandstone
Arenite (primarily SiO2)
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
Chalk (Limestone variant)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (Sedimentary Rock)
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
Quartz nodule (River pebble)
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Hematite
Iron(III) oxide (Fe2O3)