Sandstone
Arenite (specifically Quartz Arenite)
Category
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
Sandstone
Arenite (specifically Quartz Arenite)
Pebble
Lithified rock fragment / Sedimentary clast
Epidote
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
Chert (Flint Arrowhead)
Microcrystalline Quartz (SiO2)
Rose Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Ametrine
Ametrine (SiO2 - Silicon Dioxide with varied iron impurities)
Larimar (Pectolite)
NaCa2Si3O10(OH) (Sodium Calcium Silicate Hydroxide)
Red Jasper
Microcrystalline Quartz (SiO2) with iron oxide inclusions
Amygdaloidal Basalt
Amygdaloidal Basalt
Porphyritic Pink Granite
Phaneritic Porphyroid Granite
Quartz Geode
Silicon Dioxide (SiO2)
Jadeite
Jadeite (NaAlSi2O6)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Pink Granite
Granite (Alkali-feldspar granite)
Moqui Marble
Hematite-Goethite Concretion
Green Aventurine (Carved)
Silicon Dioxide (Quartz variant) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O(OH)2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Smoky Quartz
Silicon Dioxide (SiO2)
Actinolite
Ca2(Mg,Fe)5Si8O22(OH)2
Yellow Quartz (Citrine Quartz)
Silicon Dioxide (SiO2)
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Banded Carnelian
Carnelian (Silicon Dioxide / SiO2)
Tumbled Quartz (Snow Quartz)
Silicon Dioxide (SiO2)
Amazonite
K(AlSi3O8) - Microcline (Var. Amazonite)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Dalmation Jasper (or Dalmation Stone)
Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)
Amazonite
Microcline (KAlSi3O8)
Blue Lace Agate (Polished Point)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Dumortierite Quartz
Al7BO3(SiO4)3O3 (Aluminum borate silicate)
Aventurine
Aventurine (Silicon Dioxide with Fuchsite inclusions) - SiO2
Quartz Pebble
Silicon Dioxide (SiO2)
Fuchsite
K(Al,Cr)2(AlSi3O10)(OH)2 (Chromium-rich Muscovite)
Lemon Quartz (Orizaba/Citrinated Quartz)
Silicon Dioxide (SiO2) with iron impurities/treatment
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
Honey Calcite
Calcium Carbonate (CaCO3)
Pink Granite
Phaneritic Igneous Rock (composed of orthoclase, quartz, and mica)
Moonstone
Orthoclase and Albite (KAlSi3O8 / NaAlSi3O8)
Moss Agate
Chalcedony (SiO2 with inclusions)
Amazonite
Amazonite (K[AlSi3O8])