Quartzite
Quartzite (SiO2)
metamorphic
Category
Sedimentary (Chemical)
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River Rock (Quartzite)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Brecciated Jasper
Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)
sedimentary (clastic/chemical)
Chondrite
Ordinary Chondrite (L or H group)
meteorite
Quartzite with Dark Mineral Inclusions
Quartzite (primarily SiO2) with accessory minerals
metamorphic
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
metamorphic
Quartzite (River Cobble)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (Primary mineral: SiO2)
metamorphic
Quartz (River Cobble)
Silicon Dioxide (SiO2)
mineral
Porphyritic Rhyolite
Porphyritic Rhyolite (Extrusive Igneous Rock)
igneous
Granite or Felsic Intrusive Rock (weathered)
Granite
Igneous
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Gold Nugget
Native Gold (Au)
mineral
Yellow Quartzite
Quartzite (SiO2)
metamorphic
Yellow Quartzite
Quartzite (primarily SiO2)
metamorphic
Rhyolite
Rhyolite (Extrusive Felsic Igneous Rock)
igneous
Eclogite
Eclogite (composed primarily of Omphacite and Pyrope Garnet)
metamorphic
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Crystalline Quartz (Rough)
Quartz (Silicon Dioxide, SiO2)
mineral
Lunar Breccia Meteorite
Lunar Feldspathic Breccia
igneous
Quartz / Quartzite
Silicon Dioxide (SiO2)
minerals
Black Beauty Meteorite
NWA 7034 (Northwest Africa 7034)
igneous
Quartzite Cobble
Metamorphosed Quartz Sandstone
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Aragonite (Star Cluster or Twinned variety)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Yellow Quartzite (River Stone)
Quartzite (composed primarily of Quartz: SiO2)
metamorphic
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz (Crystal Point/Fragment)
Silicon Dioxide (SiO2)
mineral
Aura Rose Quartz
SiO2 (Silicon Dioxide with Titanium/Gold coating)
mineral
Rough Quartz (likely Rose or Amethyst variety)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Milky Quartz (Water-worn Pebble)
Silicon Dioxide (SiO2)
mineral
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)
metamorphic
Gold Ore (Lode Gold)
Native Gold (Au) in Matrix
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral