Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)
[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2
Category
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)
[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2
Blue Chalcedony
Microcrystalline Quartz (SiO2)
Ruby
Corundum (Al2O3 with Chromium impurities)
Dendritic Opal
Opalized Chalcedony with Manganese Inclusions (SiO2 · nH2O)
Sandstone (River Cobble)
Clastic Sedimentary Rock (primarily Quartz with Feldspar)
Sandstone
Arenite
Pyrite (on a metal substrate)
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
Amethyst
Amethyst (SiO2 with iron impurities)
Rose Quartz
Silicon dioxide with traces of titanium, iron, or manganese (SiO2)
Lapis Lazuli
Lapis Lazuli (Complex metamorphic rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica
Chakra Tumbled Stone Set
Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)
Bauxite / Iron-rich Laterite
Laterite (principally Al(OH)3, Fe2O3, and SiO2)
Sandstone (likely Quartzose)
Sandstone (Principally SiO2)
Turquoise in Matrix
Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Gneiss (Banded Gneiss)
Gneiss
Yellow Quartz
Silicon Dioxide (SiO2)
Milky Quartz with Mica inclusions
Quartz (Silicon Dioxide, SiO2)
Soapstone (Talc-Schist)
Steatite (composed primarily of Talc: Mg3Si4O10(OH)2)
Sandstone
Arenite (SiO2 based with various mineral cements)
Sandstone
Arenite (primarily SiO2)
Quartz (Smoky/Grey Quartz Variant)
Silicon Dioxide (SiO2)
Granite
Granite
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Quartz (Clear/White)
Silicon Dioxide (SiO2)
Basalt with Quartz/Calcite Veins
Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Chlorite Included Quartz
Silicon Dioxide (SiO2) with Chlorite (Mg,Fe,Li)6AlSi3O10(OH)8
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
Milky Quartz Pebbles
Silicon Dioxide (SiO2)
Citrine Quartz
Silicon Dioxide (SiO2)
Smoky Quartz (Rough Specimen)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)