Talc
Talc (Mg₃Si₄O₁₀(OH)₂)
Mineral
Category
Antropogenic (Man Made Industrial Byproduct)
Browse antropogenic (man made industrial byproduct) specimens identified by the Rock Identifier community.
Granite
Granite (a common rock type, not a single mineral species)
Igneous
Quartz
Quartz (SiO₂)
Mineral
River Pebble (Likely Chert or Fine-Grained Sandstone/Quartzite)
Siliciclastic clast (likely Chert or Quartzarenite/Quartzite pebble)
Sedimentary
Soapstone
Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)
Metamorphic Rock
Sandstone
Sandstone (lithified sand)
sedimentary
Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Serpentine Jade (New Jade/Olive Jade)
Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite
Mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Mineral
Schist
Schist (various mineralogical compositions including mica, chlorite, talc, etc.)
Metamorphic
Sandstone
Arenite (general term for sandstone)
Sedimentary Rock
Quartz
SiO₂ (Silicon Dioxide)
Mineral
Quartz (likely Milky Quartz or Chalcedony)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Sandstone
Quartz Arenite (a common type of sandstone, given the appearance), Arkose, Greywacke (depending on mineralogy)
Sedimentary Rock
Quartz
Quartz (SiO₂)
Mineral
Fluorite
Fluorite (CaF₂)
mineral
Quartzite
Quartzite (primarily SiO2)
Metamorphic
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
Metamorphic, Mineral (within a rock type)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Chert (Flint)
Chert (predominantly SiO₂ - silicon dioxide)
sedimentary
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral