Raw Citrine (Yellow Quartz)
Citrine / Silicon Dioxide (SiO2)
Category
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Raw Citrine (Yellow Quartz)
Citrine / Silicon Dioxide (SiO2)
Dendritic Opal (Common Opal)
Amorphous Hydrated Silica (SiO2·nH2O) with Manganese or Iron Oxide inclusions
Serpentine
Antigorite/Lizardite (Mg,Fe)3Si2O5(OH)4
White Quartz (Milky Quartz Mushroom)
Silicon Dioxide (SiO2)
Green Quartzite (Aventurine-like)
Quartzite (primarily SiO2 with chromium-rich mica or chlorite inclusions)
Agate (specifically, multi-colored or pastel-dyed agate)
Silicon dioxide (SiO2) - specifically, a cryptocrystalline variety of quartz known as Chalcedony, with banding classified as Agate. (If it were Fluorite, the chemical formula would be Calcium Fluoride - CaF2).
Dalmatian Stone
Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)
Smoky Quartz
Silicon Dioxide (SiO2)
Blue Quartz (Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically crocidolite or dumortierite)
Amethyst
Amethyst (SiO2 - Silicon Dioxide with iron impurities)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
Blue Sapphire
Corundum (Al2O3 with trace amounts of iron and titanium)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper (specifically Owyhee or Picture Jasper variety)
Jasper (Silicon Dioxide, SiO2)
Quartz (likely) or a Quartzite Pebble
Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Jasper, possibly Brecciated Jasper or Ocean Jasper due to patterns and color
Silicon Dioxide (SiO2), a variety of Chalcedony
Seraphinite
Clinochlore (a variety of the chlorite group)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Aquamarine
Beryl (Be3Al2Si6O18)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Red Jasper (Chert)
Silicon dioxide (SiO2) with iron oxide inclusions
Red Jasper (possibly banded)
Silicon Dioxide (SiO2) with iron oxide inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with Iron inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
Orbicular Jasper (Ocean Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
Selenite
Gypsum (CaSO4·2H2O), specifically the crystalline variety Selenite
Quartz (specifically Milky Quartz/Quartzite)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Moonstone
Adularia (orthoclase feldspar variety)
Moonstone (Green Moonstone / Garnierite)
Potassium Aluminum Silicate (KAlSi3O8) with inclusions of Garnierite
Milky Quartz
Silicon Dioxide (SiO2)
Carnelian
SiO2 (Silicon Dioxide) - Translucent reddish-brown variety of Chalcedony
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
Chert (specifically Gray Chert)
Chert (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Desert Rose
Gypsum (variety Selenite) - CaSO4·2H2O