Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
mineral
Category
Mineral (Specifically A Mineraloid)
Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.
Learn about Mineral (Specifically A Mineraloid) in the encyclopedia
View all →
Satin Spar
Fibrous Gypsum (CaSO4·2H2O)
mineral
Fire Opal (Common/Precious in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Carnelian (Red Chalcedony)
Silicon Dioxide (SiO2)
mineral
Jasper (Red Jasper)
Jasper (Silicon Dioxide, SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Apricot Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Green Chalcedony (likely Green Agate or Chrysoprase)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Red Jasper (Opaque Chalcedony)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Serpentine
Serpentine-group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4)
metamorphic
Labradorite
Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Jasper (likely Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary (chemically precipitated mineral)
Yellow Quartz (Citrinated Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Jasper
SiO2 (Silicon Dioxide)
sedimentary
Pink Granite
Felsic intrusive igneous rock (Quartz, K-feldspar, Plagioclase)
igneous
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with iron oxide Fe2O3 cement)
sedimentary
Granite
Granite (composed mainly of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Jasper (Zebra Jasper)
Silicon Dioxide (SiO2) with impurities
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
igneous
Bumble Bee Jasper
Calcite-bearing Volcanic Tuff (not a true Jasper)
sedimentary
Bumblebee Jasper
Fibrous Calcite with Arsenic and Sulfur Inclusions
gemstone
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Orthoceras Fossil in Limestone
Orthoceras regulare (Class Cephalopoda; Order Orthocerida)
sedimentary
Citrine Quartz
Crystalline Quartz (SiO2) with iron impurities
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
mineral
Sandstone Pebble
Arenite (specifically Lithic or Quartz Arenite)
sedimentary
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Red Jasper and Mookaite Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Mineral