Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral, Often Found As A Rock (Metamorphic)
Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.
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Specular Hematite
Specularite (Fe2O3)
mineral
Chert (variously known as Flint)
Microcrystalline quartz (SiO2)
sedimentary
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss (Pebble)
Gneiss
metamorphic
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Aventurine
Aventurine Quartz (SiO2 + Fuschite inclusions)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Basanite variety)
Microcrystalline Quartz (SiO2)
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
gemstone
Quartzite with Mica / Gneiss Pebble
Metamorphic Rock (Quartz-Feldspar-Mica aggregate)
metamorphic
Chert Pebble
Microcrystalline silica (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineralological
Pyrite Schist
Metamorphic rock containing FeS2 (Pyrite) with mica and quartz
metamorphic
Unakite-veined Granite / Epidotized Granite
Epidotized Granite (FeCu2Al2(Si2O7)(SiO4)(OH)2)
igneous
Amphibolite
Amphibolite
metamorphic
Quartz pebble with iron staining
Silicon dioxide (SiO2) with iron oxide impurities
mineral
Epidote or Unakite Rock
Epidote-bearing rock / Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Labradorite (likely)
(Ca,Na)(Al,Si)4O8
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Epidote-bearing Rock
Epidote / Silicate mineral aggregate
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Topaz
Aluminum Silicate Fluoride Hydroxide Al2SiO4(F,OH)2
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Green Aventurine
Quartz (Silicon Dioxide, SiO2) with fuchsite inclusions
mineral
Red Jasper
Silicon dioxide with iron oxide inclusions (SiO2 + Fe2O3)
sedimentary
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Common Opal or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone (likely greenschist)
Chlorite–actinolite–epidote-rich metabasalt; mineral proportions cannot be confirmed from the photo
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Serpentine Sphere
Serpentinite
metamorphic
Ruby in Zoisite
Anyolite (composite of Corundum and Zoisite)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Schist
Mica Schist (Metamorphic rock)
metamorphic
Quartz Vein in Basalt or Slate
Hydrothermal quartz vein traversing mafic host rock
metamorphic
Olivine (Dunite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Rose Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Carnelian
SiO2 (Chalcedony with iron oxide impurities)
mineral