Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Category
Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)
Browse mineral like byproduct (often mistaken for igneous rock or meteorite) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite) in the encyclopedia
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Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Tumbled Agate
Silicon Dioxide (Chalcedony variety), SiO2
mineral
Epidosite
Epidosite (composed primarily of Epidote and Quartz)
metamorphic
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt
igneous
Basalt with Quartz Veins
Mafic Igneous Rock with Quartz (SiO2) intrusions
igneous
Gneiss (High-Grade Metamorphic Rock)
Gneiss (primarily composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Quartz with Schorl (Black Tourmaline)
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Basalt with Quartz/Zeolite Inclusions
Porphyritic Basalt (SiO2 with Aluminosilicates)
igneous
Granite
Granite (a felsic intrusive igneous rock)
Igneous rock
Siltstone
Siltstone (primarily SiO2 with Al2O3)
sedimentary
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Granite featuring Quartz Vein
Granite with hydrothermal silica (SiO2) intrusion
igneous
Diabase (Greenstone)
Diabase (also known as Dolerite)
igneous
Granite
Granite (felsic intrusive igneous rock)
igneous
Granite Pebble
Granitoid (Felsic Plutonic Rock)
igneous
Greenstone / Metagraywacke
Metamorphosed basaltic or sedimentary rock (Complex Silicate)
metamorphic
Goldstone (Brown/Gold)
Aventurine Glass (Man-made glass with Copper inclusions)
gemstone
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic plutonic felsic rock (primarily Quartz, Feldspar, and Mica)
igneous
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
metamorphic
Sandstone
Arenite
sedimentary
Lava Stone and Chakra Beads
Basalt (with various mineral/synthetic beads)
igneous
Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous
Granite Pegmatite with Muscovite Mica
Granite Pegmatite (Silicon Dioxide and complex silicates)
igneous
Gold Nugget
Native Gold (Au)
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Plagioclase)
igneous
Magnetite
Magnetite (Fe3O4)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Martian Basalt Rock
Extrusive Mafic Igneous Rock (Basalt)
igneous
Likely polished bronzite or serpentine-rich rock
Probable bronzite, an iron-bearing orthopyroxene (Mg,Fe)SiO₃; exact identification requires testing
mineral
Biotite or Phlogopite Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Gold Ore
Native Gold (Au) in Matrix
mineral
Epidote in Matrix (Unakite-like Rock Fragment)
Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) / Altered Metamorphic Pebble
metamorphic
Veined Pebble (likely a Quartz-Veined Pebble)
Pebble with Mineral Vein (e.g., Quartz Vein in a Chert/Mudstone Pebble)
Sedimentary Rock (possibly conglomerate or breccia with a quartz vein)
Sandstone
Arenite (SiO2 based)
sedimentary
Quartzite with Hematite staining
Quartzite (SiO2)
metamorphic
Coarse-grained Quartz with Feldspar inclusions
Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Orthoclase (Potassium) Feldspar in Quartz
KAlSi3O8 (Potassium Aluminum Silicate)
igneous