Diorite (Salt and Pepper Rock)
Diorite
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Diorite (Salt and Pepper Rock)
Diorite
Milky Quartz
Silicon Dioxide (SiO2)
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Greywacke
Dirty Sandstone (Lithic wacke)
River Jasper (Chert/Chalcedony mix)
Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions
Chalcopyrite
Chalcopyrite (CuFeS2)
Orbicular Jasper (Eye Jasper / Kambaba-like pattern)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Ruby in Kyanite
Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
Greenschist (Chlorite Schist)
Greenschist (containing chlorite, actinolite, and epidote)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Greenstone (Greenstone River Pebble)
Greenschist (metamorphosed mafic igneous rock)
Pyrite
Pyrite (FeS2)
Banded Gneiss
Gneiss (variable mineral composition)
Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)
Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Chert (often called Flint when in chalk or limestone)
Silicon Dioxide (SiO₂)
Granite
Granite (Felsic Plutonic Rock)
Amazonite
Amazonite (KAlSi3O8); a green variety of Microcline feldspar
Quartz (Rock Crystal) with minor impurities
Quartz (SiO2)
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
Jasper
Jasper (Silicon Dioxide, SiO2)
Gold
Native Gold (Au)
Red Jasper (Opaque Chalcedony)
Silicon Dioxide (SiO2) with Hematite impurities
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Snowflake Obsidian
Volcanic glass with Cristobalite inclusions (70–75% SiO2)
Greenstone (Epidote/Chlorite-rich Metabasalt)
Greenschist / Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
Red Jasper
Red Jasper (SiO2 with Fe2O3 impurities)
Agate (specifically Lace Agate or Banded Agate)
Silicon Dioxide (SiO2)
Glauconitic Sandstone (Greensand pebble)
Glauconitic Quartz Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)
Red Sandstone (Hematitic)
Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
Diorite
Diorite (Intermediate intrusive igneous rock)
Vesicular Basalt (Scoria)
Extrusive Mafic Volcanic Rock (FeO-SiO2-MgO)
Bull Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Fluorite
Fluorite (Calcium Fluoride - CaF2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Common Opal
Hydrated silica (SiO2 " nH2O)
Diorite
Phaneritic Intrusive Igneous Rock (Intermediate Composition)
Granitic Pegmatite
Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
Fluorite
Calcium Fluoride (CaF2)