Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Category
Antropogenic (Man Made Glass Byproduct)
Browse antropogenic (man made glass byproduct) specimens identified by the Rock Identifier community.
Sandstone (Quartzose Pebble)
Clastic Sedimentary Rock (Litharenite/Quartz arenite)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone (with Iron Staining)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Yellow Quartzite (Onyx Pebble)
Silicon Dioxide (SiO2) - Quartzite
metamorphic
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
White Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (Mainly SiO2)
metamorphic
Feldspar-rich Pegmatite
Granitic Pegmatite (principally KAlSi3O8)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Red Quartzite
Quartzite (SiO2)
metamorphic
Quartz (Smoky or Impure Variety)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2, silica)
sedimentary
Blue Goldstone
Aventurine Glass (SiO2 with Co and metallic inclusions)
mineral (synthetic glass)
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
mineral
Milky Quartz Cobble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO₂)
Mineral
Chert (Grey Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Bull Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Chlorite/Epidote inclusions
Silicon Dioxide (SiO2) with phyllosilicate/sorosilicate inclusions
mineral
Rose Quartz
Silicon dioxide with traces of titanium, iron, or manganese (SiO2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Sapphire
Corundum (Al2O3)
mineral
Breciated Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (specifically Milky or Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Chert (specifically Banded Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gray Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral