Citrine Quartz
Crystalline Silicon Dioxide (SiO2) with Ferric Iron impurities
mineral
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
Learn about Mineral Side Rock in the encyclopedia
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Amethyst
Amethyst (Varietal of Quartz), SiO2 (Silicon Dioxide)
mineral
Amethyst
Quartz (SiO2)
mineral
Smoky Quartz (Chlorite Inclusions)
Silicon Dioxide (SiO2) with trace Aluminum and Natural Irradiation
mineral
Likely quartz cluster with iron staining
Quartz (SiO₂), possibly with calcite or feldspar inclusions
mineral
Amethyst
SiO2 (Amethyst is a variety of Quartz)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2) with iron impurities
mineral
Unknown Rock Fragment
Unknown
unknown
Fluorite
Fluorite (CaF₂)
mineral
Honey quartz crystal cluster
Quartz, silicon dioxide (SiO₂), likely iron-stained or inclusion-rich quartz
mineral
Small purple quartz crystal, likely amethyst
Amethyst: violet variety of quartz, silicon dioxide (SiO₂)
gemstone
Golden Healer Quartz (Iron-Stained Quartz Cluster)
Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3/FeOOH)
mineral
Copper Ore / Altered Granodiorite
Cupriferous rock with silicate gangue
mineral
Red Sandstone
Clastic Sandstone (typically Quartz-rich with Iron Oxide)
sedimentary
Banded Iron Formation (Fragment)
Banded Iron Formation (BIF)
sedimentary
Sandstone Pebble with Mineral Encrustation
Quartz Sandstone with Calcite/Halite Crust
sedimentary
Basalt with Quartz Vein
Mafic volcanic rock with hydrothermal SiO2 filling
igneous
Sandstone
Arenite
sedimentary
Granite (weathered cobble)
Granite; chiefly quartz, feldspar, and mica/amphibole
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Rock Specimen
Unclassified rock specimen
sedimentary
Small red-brown mineral or rock fragment
Unidentified; possibly iron-oxide-rich jasper, garnet, or weathered sulfide
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone with Iron Banding
Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)
sedimentary
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Vuggy Quartz on Matrix
Crystalline Silicon Dioxide (SiO2)
mineral
Basalt with Xenolith
Extrusive Igneous Rock containing Mantle Xenolith
igneous
Geode (Quartz / Chalcedony Geode)
SiO2 (Silicon Dioxide)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Shale
Laminated Mudstone (Shale)
sedimentary
Gravel / Crushed Stone
Aggregate (mixed mineral rock fragments)
sedimentary
Red Sandstone
Arenite (primarily quartz with iron oxide cement)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone with Manganese Dendrites
Clastic Sedimentary Rock (SiO2 based with MnO2 inclusions)
sedimentary
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Druzy Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
sedimentary
Crushed Granite and Basalt
Phaneritic Igneous Rock / Aphanitic Igneous Rock
igneous
Geode
Quartz nodule / Chalcedony-lined cavity
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Iron-stained)
Arenite with Limonite/Hematite staining
sedimentary
Coarse-grained gray metamorphic rock, likely gneiss
Biotite–quartz–feldspar gneiss (probable)
metamorphic
Sandstone (with Rock Art)
Sandstone (Clastic Sedimentary Rock)
sedimentary