Satin Spar Gypsum (Satin Spar Selenite)
Hydrous calcium sulfate (CaSO4%C2%A02H2O)
mineral
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Technogenic) in the encyclopedia
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Stalagmite (Flowstone)
Speleothem (Calcium Carbonate, CaCO3)
sedimentary
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
mineral
Sandstone
Arenite (SiO2 dominant)
sedimentary
Banded Chert / Cryptocrystalline Quartz
Silicon Dioxide (SiO2)
sedimentary
Botryoidal Quartz Cluster (Druzy Stalactitic Quartz)
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Iron(III) oxide, Fe2O3)
mineral
Ironstone Concretion
Ferruginous Concretion
sedimentary
Pink Opal
Hydrated Silica (SiO2·nH2O) with Palygorskite/Sepiolite inclusions
gemstone
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Fossil Shark Tooth
Chondrichthyes (Class)
fossil
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Agate Geode Nodule
Chalcedony / Quartz (SiO2)
mineral
Sunstone
Oligoclase (a plagioclase feldspar variant), (Na,Ca)(Al,Si)4O8
mineral
Amethyst (Rose de France)
Silicon Dioxide (SiO2) with iron impurities
mineral
Schist
Mica Schist
metamorphic
Pink Granite
Felsic intrusive igneous rock (composition: SiO2 and Al2O3)
igneous
Diorite (River Rock/Cobble)
Intermediate Plutonic Igneous Rock (Diorite)
igneous
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Black Beach Pebble (Basalt / Slate Pebble)
Rounded Fine-Grained Clastic / Igneous Rock Pebble
sedimentary
Blue Celestine
Celestine (SrSO4)
mineral
Quartz Geode/Vug in Host Rock
SiO2 (Silicon Dioxide) in various host rocks
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Hematite
Hematite (Fe2O3)
mineral
Red Jasper Cube
SiO2 (microcrystalline quartz)
mineral
Iron-stained Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite inclusions
mineral
Carnelian (Tumbled)
Silicon Dioxide (SiO2)
mineral
Tumbled Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (Milky/Smoky mix)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Yellow Quartz (Golden Quartz)
Silicon Dioxide (SiO2)
mineral
Lake Superior Agate
Chalcedony (SiO2 with iron impurities)
mineral
Amethyst (Tumbled)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Tumbled Clear Quartz/Rock Crystal
Silicon Dioxide (SiO2)
mineral
Aura Amethyst (Dyed/Coated)
Titanium-treated Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Pyrite in Shale
Iron Sulfide (FeS2) in Sedimentary Matrix
mineral
Quartz
Silicon Dioxide (SiO2)
mineral