Calcite
Calcite (CaCO3)
Category
Browse man made material (anthro lithic product) specimens identified by the Rock Identifier community.
Calcite
Calcite (CaCO3)
Marble
Metamorphosed Limestone/Dolomite
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Turquoise (beads)
Turquoise; CuAl6(PO4)4(OH)8·4H2O
Jasper (likely a variety of Brecciated Jasper or a patterned variety)
Silicon dioxide (SiO2)
Dark-colored Igneous Rock (likely Basalt or Diabase)
Basalt (extrusive igneous) or Diabase (intrusive igneous)
Conglomerate
Conglomerate
Dolomite
Dolomite (CaMg(CO3)2)
Quartz (likely Jasper or Chert variety)
Quartz (SiO₂)
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Banded Gneiss
Gneiss (pronounced 'nice')
Sapphire (likely blue synthetic sapphire or blue glass in a ring)
Corundum (Al₂O₃), specifically the blue variety due to trace amounts of iron and titanium impurities. If synthetic, it would still be Al₂O₃.
Amber
Fossilized Tree Resin (Amorphous Hydrocarbon)
Calcite
Calcite (Mineral; CaCO₃)
Granite
Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)
Jade
There are two distinct minerals classified as Jade: Jadeite (Na(Al,Fe3+)Si2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the image showing translucent, somewhat fibrous material, it is likely Nephrite.
Quartz
Quartz (SiO2 - Silicon Dioxide)
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.
Calcite (or Alabaster, if truly carved)
Calcium Carbonate (CaCO3)