Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Category
Mineral Based Alloy (Anthropogenic)
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Based Alloy (Anthropogenic) in the encyclopedia
View all →
Heliotrope (Bloodstone)
Cryptocrystalline Quartz (SiO2) with inclusions of Hematite (Fe2O3)
mineral
Fire Agate
Silicon Dioxide (SiO2) with layers of Limonite/Goethite
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
mineral
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
mineral
Tree Agate
Silicon Dioxide (SiO2)
mineral
Fuchsite (Green Muscovite)
K(Al,Cr)2(AlSi3O10)(OH)2
Mineral
Garnet-Bearing Schist
Almandine Garnet Micaceous Schist
metamorphic
Painted Sandstone Cobble
Clastic Sedimentary Rock (Sandstone base)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions
mineral
Amygdaloidal Basalt with Quartz
Basalt (SiO2 inclusion)
igneous
Granite (with Orthoclase and Quartz)
Phaneritic Felsic Igneous Rock (KAlSi3O8 + SiO2)
igneous
Basalt with Quartz Vein and Weathering Crust
Amygdaloidal or Porphyritic Basalt
igneous
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
sedimentary
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Greenschist
Chlorite Schist
metamorphic
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Basalt
Basalt (composition of plagioclase, pyroxene, and olivine)
igneous
Weathered Basalt with Iron Staining
Mafic Igneous Rock
igneous
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
metamorphic
Mica Schist
Crystalline Schist (often primarily Muscovite or Biotite sheet silicates)
metamorphic
Basalt with Quartz/Zeolite Inclusions
Porphyritic Basalt (SiO2 with Aluminosilicates)
igneous
Vesicular Basalt with Mineral Inclusions
Vesicular Basalt
igneous
Mica Schist
Mica Schist (primarily Muscovite and Biotite micas)
metamorphic
Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide
mineral
Diorite (River Cobble)
Phaneritic intermediate plutonic rock
igneous
Chert
Microcrystalline silica (SiO2)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (SiO2 primarily)
sedimentary
Sandstone (Weathered Pebble)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide Fe2O3 cement)
sedimentary
Heat-Treated Citrine
Quartz (Silicon Dioxide, SiO2)
mineral
Granodiorite (Water-worn Pebble)
Granodiorite
igneous
Vesicular Basalt with Magnetite/Hematite
Mafic Extrusive Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Vesicular Basalt (Amygdaloidal)
Vesicular Basalt (Fe-Mg rich extrusive volcanic rock)
igneous
Scoria (Lava Rock)
Mafic extrusive volcanic rock (Scientific formula varies based on mineral content: primarily SiO2, MgO, and FeO)
igneous