Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Mineral Health
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Iron-stained Quartz Pebble
Crystalline Silicon Dioxide (SiO2) with Hematite/Limonite staining
mineral
Clear Quartz Crystal (Likely Golden Healer/Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Felted Quartz / Chlorite Quartz
Chlorite included Quartz (SiO2 + (Mg,Fe)3(Si,Al)2O5(OH)4)
mineral
Quartz with Iron Oxide Monzonite or Sandstone contact
Quartz (SiO2) with Limonite/Hematite staining
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Crystal Quartz Beads (likely Clear Quartz)
Quartz (SiO₂)
Mineral
Basalt Porphyry
Porphyritic Basalt
igneous
Epidosite (Epidote-Quartz rock)
Epidote-rich hydrothermal rock
metamorphic
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
igneous
Pegmatite
Coarse-grained Igneous Rock (Granitic Pegmatite)
igneous
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and other mineral inclusions
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a concretionary structure
sedimentary
Quartz (Citrine or Iron-stained variety)
Silicon Dioxide (SiO2)
mineral
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
anthropogenic sedimentary (technolith)
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
igneous
Olivine (Peridot)
Olivine Group (Mg,Fe)2SiO4
mineral
Quartz Geode
Quartz (SiO2) within a geode structure
mineral
Granite or Granodiorite (weathered fieldstone)
Granitoid
igneous
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Milky Quartz with Chlorite/Amphibite Inclusions
Silicon Dioxide (SiO2) with various mineral inclusions
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Mineral
Green Kyanite
Kyanite (Al2SiO5)
mineral
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
mineral
Sodalite (Dotted or Spotted Variety)
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Quartz with Pyrite and Iron Staining
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions
mineral
Gneiss Pebble
Gneiss (High-grade metamorphic rock)
metamorphic
Chert Conglomerate (or Breccia)
Sedimentary Clastic Rock (variety: Ferruginous Chert Breccia)
sedimentary
Hypersthene (or Enstatite/Ferrosilite)
Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)
Mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Azurite
Azurite (Cu3(CO3)2(OH)2)
mineral
Chrysocolla in Jasper (Chryso-Jasper)
Cu2-xAlx(H2-xSi2O5)(OH)4·n H2O (Chrysocolla) + SiO2 (Jasper)
mineral
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
sedimentary
Pegmatitic Granite
Granite with Orthoclase Feldspar and Quartz (SiO2, KAlSi3O8)
igneous
Sandstone (Quartzose Sandstone)
Arenite
sedimentary
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite and Calcite inclusions
igneous