Mica Schist
Mica Schist (contains Muscovite, Biotite, and Quartz)
metamorphic
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
Learn about Mineral (Refined Metal) in the encyclopedia
View all →
Amygdaloidal Basalt
Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)
igneous
Nuummite
Antigorite-Anthophyllite complex
metamorphic
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Schist
Mica Schist (primarily consisting of muscovite KAl2(AlSi3O10)(OH)2 or biotite K(Mg,Fe)3(AlSi3O10)(OH)2)
metamorphic
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
sedimentary
Fossilized Shark Tooth (Sand Tiger)
Carcharias taurus (fossil specimen)
sedimentary
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt
igneous
Ironstone Concretion
Siderite or Hematite Concretion
sedimentary
Nuummite
Orthorhombic amphibole (Gedrite and Anthophyllite mixture) - (Mg,Fe)7Si8O22(OH)2
metamorphic
Nuummite
Antophyllite-Gedrite (Orthorhombic amphiboles)
metamorphic
Composite Turquoise or Reconstituted Turquoise with Copper inclusions
CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
mineral
Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Fluorite (Rainbow or Multi-colored Fluorite)
Fluorite (Calcium Fluoride - CaF2)
mineral
Ironstone Concretion / Goethite Nodules
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Basalt (River Cobble)
Mafic Igneous Basalt (composed primarily of Plagioclase feldspar, Pyroxene, and Olivine)
Igneous
Polished septarian nodule
Septarian concretion; calcite/aragonite and barite-filled fractures in a carbonate-rich mudstone, commonly with pyrite
sedimentary
Mica Schist with Quartz and Muscovite
Muscovite-Quartz Schist
metamorphic
Schist
Mica Schist (Complex Silicates)
metamorphic
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
sedimentary
Schist (Micaceous Schist)
Mica Schist
metamorphic
Schist
Mica Schist
metamorphic
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Basalt
Basalt
igneous
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Schist
Chlorite-Mica Schist
metamorphic
Vesicular Basalt (Scoria)
Vesicular Basalt
igneous
Mica Schist
Mica Schist (predominantly Muscovite/Biotite)
metamorphic
Pyrite-bearing metamorphic rock (likely schist or gneiss)
Pyrite (FeS₂) in a quartz–mica-rich host rock
metamorphic
Schist
Schist (Crystalline Metamorphic Rock)
metamorphic
Ironstone / Weathered Hematite
Iron oxide-rich sedimentary rock with Goethite/Hematite
sedimentary
Manganese Dendrite on Siltstone
Manganese Oxide (pyrolusite or psilomelane) Dendrites
mineral/sedimentary