Quartz (with Sandstone/Quartzite rocks)
Silicon Dioxide (SiO2)
Category
Browse mineral, variety of quartz specimens identified by the Rock Identifier community.
Quartz (with Sandstone/Quartzite rocks)
Silicon Dioxide (SiO2)
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
Leopard Skin Jasper
Chalcedony (cryptocrystalline Quartz)
Quartz
Silicon Dioxide (SiO2)
Chevron Amethyst
Quartz (SiO2) with patterned Amethyst and White Quartz/Milky Quartz
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz with Tourmaline and Iron Staining
Silicon Dioxide (SiO2) with Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
Amethyst geode
Quartz (SiO₂), purple variety amethyst; commonly in basalt-hosted geodes
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Quartz (River-worn Pebble)
Quartz (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Jasper
Silicon dioxide, SiO2
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Puddingstone (Jasper-Conglomerate)
Conglomerate (Silicon Dioxide, SiO2 with impurities)
Quartz (Raw and Water-worn)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Quartz (likely milky quartz or a stained variety)
Silicon Dioxide (SiO₂)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Satin Spar Selenite
Fibrous Gypsum (CaSO4·2H2O)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Tumbled chalcedony (likely brown agate/jasper)
Microcrystalline quartz, SiO₂; potentially iron-stained chalcedony or jasper
Quartz (Rose/Milky variety)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Gray Chalcedony)
Microcrystalline Quartz (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Black Onyx
Chalcedony (Silicon Dioxide, SiO2)
Black Onyx (Tumbled)
Silicon Dioxide (SiO2)
Flint
SiO2 (Microcrystalline Quartz / Chert)
Milky Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
Lake Superior Agate
Silicon dioxide (chalcedony variety quartz)
Rose Quartz
Crystalline Silicon Dioxide with trace Titanium/Manganese/Iron (SiO2)
Quartz pebble (Agate / Chalcedony)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Smoky Quartz
SiO2 (Silicon Dioxide)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz Pebble
Rose Quartz (SiO2 with inclusions of Dumortierite)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese