Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Category
Anthropogenic (Man Made Material Processed By Nature)
Browse anthropogenic (man made material processed by nature) specimens identified by the Rock Identifier community.
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Granite
Granite (Alkali feldspar, Plagioclase feldspar, and Quartz)
igneous
Pink Granite
Granite (Phaneritic intrusive rock)
igneous
Pink Granite
Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)
igneous
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock, consisting primarily of Quartz, Feldspar, and Mica)
Igneous
Quartz (likely) or a Quartzite Pebble
Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.
Mineral, specifically a detrital grain
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
igneous
Granite (Leucogranite)
Felsic Plutonic Rock (Granite)
igneous
Sandstone
Arenite
sedimentary
Granite
Granite (composed primarily of Quartz SiO2, Orthoclase KAlSi3O8, and Plagioclase NaAlSi3O8 to CaAl2Si2O8)
Igneous
Granite
Granite (Silicic Plutonic Rock)
igneous
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Pink Granite (Fragment)
Pink Granite (dominated by Potassium Feldspar: KAlSi3O8)
Igneous
Milky Quartz
Silicon dioxide (SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Mineral
Limonite (Iron Ore)
Limonite (an FeO(OH)·nH2O mineraloid, not a true mineral due to variable composition)
Mineral
Sandstone (Wonderstone)
Silicified Sandstone / Orthoquartzite with Liesegang rings
sedimentary
Green Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Chert (Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Mineral
Obsidian
Obsidian (volcanic glass), predominantly amorphous SiO₂
Igneous
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Wishing Stone (Gneiss or Basalt with Quartz Vein)
Gneiss or Metabasalt (with a Quartz or Calcite intrusion)
metamorphic
Limestone (specifically Dolomitic/Crystalline Limestone)
Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)
sedimentary
Cobaltian Calcite (Cobaltoan Calcite)
Cobalt-bearing Calcite (Ca,Co)CO3
mineral
Citrine (likely Heat-Treated Amethyst)
Silicon Dioxide (SiO2)
mineral
Golden Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)
Chert (microcrystalline quartz)
Metamorphic Rock
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 oxides)
sedimentary
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Granite (Felsic Plutonic Rock)
Igneous
Rose Quartz
SiO2 (Silicon Dioxide with trace amounts of titanium, iron, or manganese)
mineral
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral