Black Obsidian
Volcanic glass
Category
Browse man made glass mineral simulant specimens identified by the Rock Identifier community.
Black Obsidian
Volcanic glass
Obsidian
Volcanic Glass
Quartzite Pebble (River Rock)
Quartzite (SiO2)
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Chrysocolla and Malachite Beads
Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz with Associated Minerals
Silicon Dioxide (SiO2)
Likely quartz-rich mineral fragment
Quartz (SiO₂), possibly iron-stained or included quartz
Quartz
Silicon Dioxide (SiO2)
Actinolite (likely fibrous amphibole)
Actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂; possibly an actinolite–tremolite specimen
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Obsidian
Volcanic Glass (predominantly SiO2)
Green Aventurine and Clear Quartz Bracelet
Quartz variety with Fuchsite inclusions (Aventurine) and pure Silicon Dioxide (SiO2)
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
Quartz Vein (Iron-stained)
Silicon Dioxide (SiO2) with limonite/hematite staining
Quartz-rich breccia or vein quartz fragment
Quartz (SiO₂), likely with iron-oxide staining and attached host rock
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Obsidian
Volcanic Glass (Amorphous Silica)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Likely weathered quartz or quartz-rich pebble
Quartz, silicon dioxide (SiO₂)
Quartz
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Quartz with Orthoclase Feldspar
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)
Ruby (Raw Corundum)
Alumina (Al2O3) with Chromium traces
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
Muscovite Mica (in Quartz/Feldspar Matrix)
Muscovite - KAl2(AlSi3O10)(OH)2
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
Mica (Muscovite)
Potassium aluminum silicate - KAl2(AlSi3O10)(OH)2
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Quartz with Iron Staining
Silicon Dioxide (SiO2)
Obsidian
Volcanic glass
Quartz pebble
Silicon dioxide (SiO2)
Tumbled blue-gray chalcedony (likely blue agate)
Chalcedony, microcrystalline quartz (SiO₂)