Quartz
Silicon Dioxide (SiO2)
Mineral
Category
Metamorphic Or Igneous
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
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Amethyst Geode/Cluster
Quartz (SiO2) - variety Amethyst
Mineral
Sapphirine in Matrix
Sapphirine (Mg,Al)8(Al,Si)6O20
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite mica)
Mineral
Amethyst
Quartz variety; chemical formula: SiO₂ (silicon dioxide) with Fe³⁺ impurities
Mineral
Quartz (Rock Crystal) with minor impurities
Quartz (SiO2)
Mineral
Blue Quartz
Quartz (SiO2) with inclusions
Mineral
Quartzite pebble
Quartzite (SiO2 based)
metamorphic
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite
Mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Granite
Granite
igneous
Mica Schist with Garnet
Garnet-Mica Schist
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
White Topaz
Al2SiO4(F,OH)2
mineral
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Red Quartzite River Rock
Metamorphic Quartzite (SiO2)
metamorphic
Anthracite Coal
Anthracite (Metamorphic Coal)
sedimentary
Quartzite Cobble
Metamorphic Quartzite (SiO2)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Quartzite (River Pebble)
Metamorphic Quartz (SiO2)
metamorphic
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Quartzite River Rock
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic rock (SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite with Sandstone/Iron staining
Metamorphic Quartzite (SiO2)
metamorphic
Quartz River Pebble (Quartzite)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartz (SiO2)
metamorphic
Slate
Foliated Metamorphic Slate
metamorphic
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Picasso Stone
Metamorphic Limestone (Marble)
metamorphic
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite (with Iron Staining)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic