Granite
Plutonic felsic rock (Quartz, Feldspar, Mica)
igneous
Category
Mineral Based Composite
Browse mineral based composite specimens identified by the Rock Identifier community.
Schist (Micaceous)
Mica Schist
metamorphic
Basalt with Epidote/Chlorite
Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))
igneous
Limestone (Ocherous)
Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)
sedimentary
Pink Granite
Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)
igneous
Vuggy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Granodiorite
Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)
igneous
Gneiss
Gneiss
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Granite (River-worn Cobble)
Phaneritic Felsic Igneous Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)
igneous
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Bloodstone (Heliotrope)
Silicon dioxide (SiO2) with Hematite inclusions
mineral
Flower Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Blue Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Diorite
Diorite (Intermediate Plutonic Rock)
igneous
Amethyst (Pale/Light Variety)
Quartz (Silicon Dioxide) with Iron impurities - SiO2
mineral
Lepidolite in Quartz (Obelisk)
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite)
metamorphic
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Stichtite (often found in Serpentinite)
Stichtite Mg6Cr2CO3(OH)16·4H2O
Mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Beryl (Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
mineral
Phantom Quartz (Chlorite Inclusion)
Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Al)6(Si,Al)4O10(OH)8
mineral
Jade
There are two distinct minerals commonly known as Jade: Jadeite (NaAlSi2O6) and Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2). Based on the appearance, these spheres are likely Nephrite.
Mineral
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
mineral
Granite
Granite (Felsic Intrusive Igneous Rock)
igneous
Lepidolite on Matrix
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Basalt
Mafic volcanic rock (various silicate minerals including Pyroxene and Plagioclase)
igneous
Granite (with Quartz and Mica)
Phaneritic Felsic Igneous Rock
igneous
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic
Granite (White Granite variant)
Phaneritic Plutonic Rock (High-silica Felsic)
igneous
Granite
Granitoid
igneous
Porphyritic Basalt (with Quartz or Calcite inclusion)
Porphyritic Basalt (Matrix: SiO2/MgO/FeO, Phenocryst: likely Quartz or Calcite)
igneous
K2 Jasper (K2 Granite)
Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)
igneous