Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Metamorphic, Sedimentary
Browse igneous, metamorphic, sedimentary specimens identified by the Rock Identifier community.
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Quartz Pebble
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Citrine
SiO2 (Silicon Dioxide)
mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Quartz (Drusy/Crystalline)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Banded Gneiss
Metamorphic Gneiss
metamorphic
Ruby Zoisite
Anyolite (Calcium aluminium silicate with Chromium/Corundum inclusions)
metamorphic
Quartz geode or quartz-bearing rock
Quartz (SiO₂), likely in a chalcedony- or basalt-hosted cavity
mineral
Tumbled quartz pebble, possibly citrine or pale smoky quartz
Quartz (SiO₂), likely microcrystalline/tumbled material
mineral
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Metamorphic Foliated Gneiss
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
metamorphic
Quartz-rich pebble (likely milky quartz)
Quartz, SiO₂
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Quartz pebble with iron staining
SiO2
mineral
Blue apatite (likely dyed or enhanced)
Apatite group; fluorapatite, Ca5(PO4)3F, is the common blue variety
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
mineral
Tumbled White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Calcite (with iron oxide staining)
Calcium Carbonate (CaCO3)
mineral
Amethyst and Calcite collection
Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral