Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
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Copper Ore with Chrysocolla and Azurite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / Cu3(CO3)2(OH)2 (Azurite)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Milky Quartz/Clear Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Concretion or Geode (unbroken)
Varied (depending on mineral composition and cementing agent). For quartz-lined geodes, the scientific name of the dominant mineral would be Quartz (SiO2). For calcite-lined geodes, Calcite (CaCO3). Concretions are often composed of cryptocrystalline quartz (chert), calcite, or iron oxides.
Sedimentary rock (specifically a concretion or possibly a geode)
Amber
Succinite (organic mineraloid); Chemical formula: C10H16O
mineral
Quartz (in a rock matrix)
Quartz (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Cubic Zirconia (Simulated Diamond)
Zirconium dioxide (ZrO2)
mineral
Calcite
Calcite (Mineral; CaCO₃)
Mineral
Native Gold in Quartz
Native Gold (Au)
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz (Pebble)
Quartz (SiO₂)
Mineral
Shale or Mudstone (Based on appearance)
Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)
Sedimentary
Diamond
Diamond (pure carbon, C)
mineral
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
igneous
Basalt
Basalt
igneous
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Granite Water-Worn Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Lepidolite on Pegmatite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite
igneous
Quartz (worked as a tool or artifact)
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Fe2O3)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with Fuchsite inclusions)
metamorphic
Granitic Pegmatite
Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)
igneous
Rough Blue Sapphire
Corundum (Al2O3)
mineral
Jadeite Jade
Jadeite (NaAlSi2O6)
metamorphic
Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Granite
Granite
igneous
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
igneous
Lavender Jade (Jadeite)
Jadeite - Sodium Aluminum Silicate (NaAlSi2O6)
metamorphic
Diamond (as set in a gold ring)
Carbon (C)
mineral
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral