White quartz fragment
Quartz (silicon dioxide, SiO₂)
mineral
Category
Mineral With Metamorphic Or Sedimentary Host
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Learn about Mineral With Metamorphic Or Sedimentary Host in the encyclopedia
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Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Emerald (or possibly Green Glass / Slag)
Beryl (Be3Al2(SiO3)6)
gemstone
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Milky quartz–rich rock
Quartz (SiO₂), likely massive milky quartz with minor dark inclusions
mineral
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
metamorphic
Quartz Vein in Amphibolite / Gneiss
Quartz (SiO2) in Mafic Metamorphic Host Rock
metamorphic
Banded Pebble (Metamorphic Slate or Gneiss with Quartz Veining)
Metamorphic Rock with Quartz/Calcite Veins
metamorphic
Metallic sulfide ore, likely pyrite-bearing rock
Pyrite (FeS₂), possibly with chalcopyrite and quartz/host rock
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Agate (or Operculum / Fossil Shell)
Silicon Dioxide (SiO2)
mineral
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Blue Dumortierite Quartz
Dumortierite Inclusions in Quartz (SiO2 with Al7(BO3)(SiO4)3O3)
mineral
Pyrite (on host rock)
Iron Sulfide (FeS2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Pyrite in Shale
Iron Sulfide (FeS2)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within metamorphic/igneous matrix
igneous/metamorphic
Quartz-veined Metamorphic Rock
Quartz-veined Schist or Gneiss
metamorphic
Milky Quartz (Water-worn pebble/nodule)
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz-Veined Gneiss or Metamorphic Rock with Quartz Veins
Quartz-veined metamorphic rock (Silicate mineral assemblage)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz-rich metamorphic rock, likely quartzite or vein quartz
Quartzite; predominantly microcrystalline quartz (SiO₂), possibly with mica and feldspar
metamorphic
Pyrite (on Quartz/Host Rock)
Iron Sulfide (FeS₂)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Calcite
Calcite (CaCO₃), likely crystalline limestone or marble fragment
mineral
Grey Agate (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz-veined Sandstone
Sedimentary rock with quartz vein (SiO2)
sedimentary
Honey calcite (likely rough cleavage fragment)
Calcite, calcium carbonate (CaCO₃)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Agate
Agate (Silicon Dioxide, SiO2)
mineral
Pyrite-bearing Rock / Pyrite Ore
Iron Sulfide (FeS2) in host rock matrix
mineral
Blue Apatite
Calcium Fluorophosphate (Ca5(PO4)3F)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluorapatite / Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz-rich mineral fragment
Quartz (silicon dioxide, SiO₂), possibly milky quartz
mineral
Garnet-bearing Schist / Conglomerate Specimen
Metamorphic rock with almandine garnet porphyroblasts
metamorphic
White quartz-rich rock, likely milky quartz or quartzite
Quartz (SiO₂); possibly quartzite, a metamorphosed quartz sandstone
metamorphic
Pyrite-bearing metamorphic rock (probable pyrite schist or sulfide ore)
Pyrite (FeS₂) in a foliated, quartz–mica-rich host rock; exact identification requires testing
metamorphic
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral