Slag (Industrial Glass Slag)
Amorphous Silica / Ferro-silicate Slag
mineraloid / anthropogenic
Category
Man Made Object (Coin)
Browse man made object (coin) specimens identified by the Rock Identifier community.
Tree Agate
SiO2
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
Mineral
Sandstone
Sandstone (composed primarily of sand-sized minerals or rock grains)
sedimentary
Synthetic Sapphire and Ion-X Glass
Single-crystal Alumina (Al2O3) and Ion-strengthened Aluminosilicate Glass
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Rose Quartz
Rose Quartz (SiO2)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Shiva Lingam
Cryptocrystalline Quartz (Jasproid/Jasper)
sedimentary
Galena
Lead Sulfide (PbS)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral / Sedimentary occurrence
Basalt (with Porphyritic/Vesicular texture)
Extrusive mafic igneous rock
igneous
Sandstone (likely Arkosic or Quartzose)
Sandstone (SiO2 dominated)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Clear Quartz
Silicon dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Halite
Halite (Sodium Chloride, NaCl)
mineral
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 primarily)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Kimberlite
Kimberlite (Potassic ultramafic igneous rock)
igneous
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Granular)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral