Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Category
Synthetic Or Natural Fiber
Browse synthetic or natural fiber specimens identified by the Rock Identifier community.
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Basalt
Extrusive Igneous Rock
igneous
Serpentinite
Serpentinite (Mg3Si2O5(OH)4)
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Basalt
Mafic Volcanic Rock
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)
igneous
Basalt
Mafic extrusive igneous rock
igneous
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Digital Multimeter (Synthetic Object)
Digital Multimeter (DMM)
not a rock
Basalt
Extrusive mafic igneous rock
igneous
Basalt with Iron Oxide staining
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Greenstone / Nephrite Jade
Tremolite-actinolite series (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Tumbled Rose Quartz
Quartz (Silicon Dioxide, SiO2 with trace amounts of titanium, iron, or manganese)
mineral
Quartz (Rose Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Blue Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Basalt
Mafic extrusive igneous rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Basalt
igneous
Serpentine
(Mg,Fe)3Si2O5(OH)4
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Belemnite (Fossilized Rostrum)
Belemnitida (order), specifically Neohibolites or similar genera depending on age
sedimentary
Tiger's Eye
Silicon Dioxide with inclusions (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Wood Paneling
Engineered Wood / Plywood Paneling
not a rock
Okenite
Okenite, Ca3Si6O15·6H2O
mineral
Basalt
Extrusive Igneous Rock
igneous
Tiger's Eye
SiO2 (Quartz pseudomorph after crocidolite)
gemstone
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
metamorphic
Tiger's Eye
Silicon dioxide with fibrous inclusions (SiO2)
mineral
Limpets Shell / Fossil Specimen
Patellogastropoda (Class)
fossil
Cardstock (Paper)
Cellulose (C6H10O5)n
sedimentary (man-made)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Basalt
Extrusive Igneous Rock (Mafic)
igneous
Basalt
Extrusive Igneous Rock (Mafic)
igneous