Green Quartz / Prasiolite
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
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Granite
Granite
Igneous
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
metamorphic
Granitoid (Granite/Gneiss mix)
Phaneritic Felsic Igneous Rock
igneous
Greenschist (or Serpentinite) with Quartz-Feldspar Vein
Metabasalt / Greenschist Facies Rock
metamorphic
Magnetite / Iron Ore (likely Hematite-Magnetite mix)
Magnetite (Fe3O4)
mineral
Granite
Granite
igneous
Pyrite-bearing rock
Likely pyrite (FeS₂), possibly with quartz or other sulfide minerals
mineral
Serpentinite (or Green Quartz Pebble)
Mg3Si2O5(OH)4 (Serpentine group) / SiO2 (Quartz mix)
metamorphic
Beryl (Variety Mix)
Be3Al2(Si6O18)
Mineral
Pegmatite with quartz and feldspar
Granitic pegmatite, chiefly quartz (SiO₂) and feldspar (likely potassium feldspar or plagioclase)
igneous
Weathered granite
Granite, chiefly quartz, potassium feldspar, plagioclase, and biotite or hornblende
igneous
River Cobble (Quartzite / Sandstone Gravel)
SiO2 (Quartz-rich sedimentary/metamorphic rock)
sedimentary
Jasper and Quartzite mix
Silicon Dioxide (SiO2) with impurities
sedimentary or metamorphic
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Granodiorite
Granodiorite
Igneous
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
metamorphic
Likely muscovite-bearing mica schist
Mica schist, composed mainly of quartz and mica (muscovite and/or biotite)
metamorphic
River Pebble (Quartz/Sandstone)
Silicon Dioxide (SiO2) Mix
sedimentary
Orange Quartzite (Tumbled)
Quartzite (SiO2)
metamorphic
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Amethyst and Ruby in Zoisite
Silicon Dioxide (SiO2) and Anyolite (Zoisite-Hornblende-Ruby mix)
mineral and metamorphic rock
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
sedimentary and metamorphic
Weathered metamorphic rock, likely schist or phyllite
Quartz–mica schist/phyllite (exact identification requires a fresh surface and tests)
metamorphic
Granite
Granite (composed of Quartz, Feldspar, and Mica)
igneous
Cobblestones (Basalt/River Rock)
Polished lithic fragments and rounded pebbles
sedimentary
Diorite
Intermediate intrusive igneous rock
igneous
Diorite
Diorite (plutonic igneous rock)
igneous
Rhodonite, Gray Moonstone, and White Feldspar Mix
Multiple: MnSiO3 (Rhodonite), (K,Na)AlSi3O8 (Feldspar/Moonstone)
mineral
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Granite and Igneous Mix
Phaneritic Felsic to Mafic Intrusive Rocks
igneous
River Rocks (Polished River Pebbles)
Stream-rounded clastic sediments
Mixed (Sedimentary, Igneous, and Metamorphic)
Granitic Pegmatite
Granite (with coarse-grained Quartz, Feldspar, and Mica components)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Chalcedony (Agate/Jasper mix)
Cryptocrystalline Sillimanite (Quartz) - SiO2
mineral
Diorite (Polished River Pebble)
Diorite (Intermediate intrusive igneous rock)
igneous
Granite pebble
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Tumbled dark gray stone, likely basalt
Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine
igneous
Clear Quartz
Silicon dioxide (SiO2)
mineral