Epidote (Unakite variety)
Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Category
Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)
Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.
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Greenschist
Greenschist facies metamorphic rock
metamorphic
Pebble
Lithified rock fragment / Sedimentary clast
sedimentary
Quartzite Arrowhead (Archaeological Lithic)
Recrystallized Quartz (SiO2)
metamorphic
Gravel / Crushed Stone
Aggregate (mixed mineral rock fragments)
sedimentary
Gneiss
Gneiss
metamorphic
Basalt Pebble
Basalt
igneous
Tumbled Amethyst and Smoky Quartz
Silicon Dioxide (SiO2) with impurities
mineral
Greenstone
Metamorphosed Mafic Igneous Rock
metamorphic
Blue Topaz
Al2SiO4(F,OH)2
gemstone
Granitoid Gneiss with Feldspar Vein
Gneiss (High-grade Metamorphic Rock) with Potassium Feldspar (KAlSi3O8)
metamorphic
Gneiss (Hornblende/Biotite Gneiss)
Foliated Metamorphic Rock (Quartz-Feldspar-Amphibole/Mica matrix)
metamorphic
Pink Granite
Phaneritic Granitoid
igneous
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Labradorite
Plagioclase Feldspar (Ca,Na)(Al,Si)4O8
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
metamorphic
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Polished Marble (likely Carrara-type with Iron oxides)
Metamorphosed Carbonate (CaCO3)
metamorphic
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Greenstone
Metabasalt (often contains Chlorite, Actinolite, and Epidote)
metamorphic
Gneiss (or Granite Gneiss)
Metamorphic rock rich in quartz, feldspar, and biotite/amphibole
metamorphic
Gneiss (Metamorphosed Granitic Rock)
Gneiss (composed mainly of quartz, feldspar, biotite, and/or hornblende)
metamorphic
Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Quartz with Pyrite
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Sodalite in Quartz
Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)
metamorphic
Sandstone (Greywacke)
Arenite/Greywacke (SiO2 major)
sedimentary
Amethyst (Geode Fragment)
Silicon Dioxide (SiO2 with iron impurities)
mineral
River Stone (likely Basalt or Gabro)
Mafic Igneous Rock
igneous
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Greenstone / Greenschist
Chlorite schist / Epidiorite / Metabasalt
metamorphic
Granitoid (Granite/Gneiss mix)
Phaneritic Felsic Igneous Rock
igneous
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
Quartz with Iron Staining
SiO2 with Fe oxide impurities
mineral
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Connemara Marble
Calcitic Marble / Serpentinite composite
metamorphic
K2 Jasper (K2 Stone)
Azurite in Granite / Quartzite
metamorphic
Quartz-veined Siltstone
Siltstone with Quartz (SiO2) veins
sedimentary
Gneiss (High-grade Metamorphic Rock)
Gneiss
metamorphic
Rainbow Moonstone with Black Tourmaline
White Labradorite with Schorl (Na,Ca)(Al,Si)4O8
mineral
Gneiss with Quartz Veining
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic