Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
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Moonstone (specifically White Moonstone or Girasol Quartz)
Potassium aluminum silicate (KAlSi3O8)
mineral
Beryl (Emerald or Aquamarine in Matrix)
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Aquamarine (Beryl)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
mineral
Feldspar (Orthoclase/Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Moonstone (Adularia)
Potassium aluminum silicate (KAlSi3O8)
mineral
White Moonstone (Feldspar)
Potassium aluminum silicate (KAlSi3O8)
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Feldspar (Orthoclase)
Potassium Alveolar Silicate (KAlSi3O8)
mineral
Granite
Intrusive Igneous Rock
igneous
Botryoidal Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Quartz with Magnetite or Schorl inclusion
Silicon Dioxide (SiO2) with Fe3O4 or NaFe3(Al6)(BO3)3Si6O18(OH)4
metamorphic
White Chalcedony (likely Common Opal or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Granitic Gneiss
Gneiss (Complex silicate composition)
metamorphic
Tumbled green serpentine (probable)
Serpentine-group minerals, chiefly antigorite and lizardite; hydrated magnesium silicate, approximately Mg₃Si₂O₅(OH)₄
mineral
Polished orbicular jasper (likely ocean jasper)
Microcrystalline quartz (SiO₂) with iron oxides and accessory minerals
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Pink Granite (Unakite-bearing Granite Pebble)
Granite (rich in Potassium Feldspar / Orthoclase)
igneous
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
mineral
Cobalt Blue Glass / Cullet Glass
Silicon dioxide (Amorphous man-made glass)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Mahogany Obsidian
Volcanic Glass (Silicate: SiO2 + Fe2O3)
igneous
Tumbled jasper pebble
Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly containing iron oxides and other silicates
mineral
Unidentifiable embedded dark fragment
Indeterminate; possibly a dark silicate mineral or lithic inclusion
mineral
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Diorite
Intermediate plutonic igneous rock
igneous
Tumbled jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly containing iron oxides and other silicates
mineral
Bauxite
Bauxite (Aluminum Ore)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
![Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety) (Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix) — igneous](https://media.rockidentification.com/a4026c5a-8968-420a-93d2-4bffc2cc7d5f-thumbnail.jpg)
Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix
igneous
Rose Quartz, Fuchsite, and Green Aventurine Collection
Silicon Dioxide (SiO2) and Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(OH, F)2)
mineral
Polished brown mineral or rock fragment
Indeterminate from image; possibly iron-stained quartz, jasper, or a polished sulfide-bearing specimen
mineral
Sandstone
Arenite
sedimentary
Pink Quartz (Rose Quartz)
Silicon Dioxide (SiO2)
mineral
Mixed rock fragments, likely basalt and weathered granite
Probable mafic volcanic rock (basalt) with granitoid fragments; exact identification is uncertain from the image
igneous
Amygdaloidal Basalt with Epidote
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Small rounded stone or mineral fragment
Indeterminate; likely a common quartz- or feldspar-bearing silicate fragment
mineral
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Granite
Intrusive Igneous Rock
igneous