Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral, Often A Rock Given Its Aggregate Nature
Browse mineral, often a rock given its aggregate nature specimens identified by the Rock Identifier community.
Learn about Mineral, Often A Rock Given Its Aggregate Nature in the encyclopedia
View all →
Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Citrine or Yellow Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Fossilized Bone (Petrified Bone)
Permineralized Vertebrate Remains
sedimentary
Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)
Diorite (Igneous rock, intrusive, intermediate composition)
Igneous Rock
Green Quartz (Prasiolite or Aventurine)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 principal composition)
sedimentary
Milky Quartz (Quartz Vein)
Silicon Dioxide (SiO2)
mineral
River Cobble (likely Sandstone or Siltstone type)
Sandstone or Siltstone (common rock types that form river cobbles)
Sedimentary Rock (specifically a clastic sedimentary rock formed into a cobble)
Jasper (Iron-stained Chalcedony)
SiO2 with Fe2O3 (Iron Oxide) impurities
Sedimentary / Mineral (Silica)
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Chrysocolla
Chrysocolla (Cu2–xAlx(H2–xSi2O5)(OH)4·nH2O)
mineral
Sandstone
Sandstone (SiO2 with iron oxides and clay)
sedimentary
Iron-stained Quartz
Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)
mineral
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
sedimentary
Banded Agate (Tumbled)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
gemstone
Red Jasper (Chert)
Silicon Dioxide (SiO2)
sedimentary
Yellow Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sulfur on Aragonite
Sulfur (S) and Aragonite (CaCO3)
Mineral
Basalt
Extrusive Igneous Rock
igneous
Quartzwacke / Impure Sandstone
Arenite with minor lithic fragments (Silicon Dioxide matrix)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2)
mineral
Native Copper
Native Copper (Cu)
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Native Gold
Native Gold (Au)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Granite
Granite (a plutonic igneous rock composed of quartz, feldspar, and mica)
igneous
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
mineral
Copper Nugget
Native Copper (Cu)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Chalcedony (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
mineral
Chalcedony (variations like Agate or Jasper)
Chalcedony (SiO₂ - microcrystalline quartz)
Mineral