Quartz Vein in Metamorphic Rock
Quartz-veined Schist or Gneiss
metamorphic
Category
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Wishing Stone (Quartz Vein in Greywacke / Basalt)
Quartz vein in host rock (e.g. Meta-basalt or Greywacke)
metamorphic
Shale
Argillite / Shale
sedimentary
Desert Rose
Gypsum (CaSO4·2H2O) or Barite (BaSO4)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary or volcanic shell
mineral
Quartz Vein in Metamorphic Rock
Quartzite or Schist host with Quartz (SiO2) intrusion
metamorphic
Granodiorite (Weathered)
Granodiorite
igneous
Basalt
Aphanitic Mafic Volcanic Rock
igneous
Basalt (River Rock)
Basalt
igneous
Granodiorite (Gneissic texture)
Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)
igneous
Basalt (Vesicular)
Basalt (Extrusive Volcanic Rock)
igneous
Puddingstone (Quartzite Pebble)
Metaconglomerate / Jasper-Quartzite Pebble
sedimentary
Quartzite Pebble (River Siltstone/Quartzite)
Quartzite (SiO2 composition)
metamorphic
Chalcedony (or a variety of Chalcedony, likely Agate or Jasper)
Chalcedony (SiO₂)
Mineral (or mineraloid if microcrystalline)
Fossilized Brachiopod or Gastropod in Chert/Limestone
Phylum Brachiopoda / Mollusca
fossil
Vesicular Basalt
Vesicular Basalt
igneous
Quartz with Mafic/Chlorite Veins
Silicon Dioxide (SiO2) with Chlorite/Epidote cross-veining
metamorphic
Quartzite with Quartz Veining
Metamorphic Quartzite (SiO2)
metamorphic
Likely weathered gneiss
Foliated metamorphic rock, commonly quartz–feldspar–mica gneiss
metamorphic
Smooth river pebble
Indeterminate lithology; likely fine-grained quartz-rich sandstone, siltstone, or weathered chert
sedimentary
Basalt with inclusion
Basalt (Aphanitic-Porphyritic texture)
igneous
Basalt with Scoria
Amygdaloidal Basalt / Vesicular Basalt
igneous
Vesicular Basalt (Lava Rock)
Vesicular Basalt
igneous
Granite
Felsic intrusive igneous rock
igneous
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
N/A - Image is non-geological
Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)
Synthetic material (Plastic/Polymer)
Sandstone Cobble with Iron Staining
Arenite with Limonite/Hematite staining
sedimentary
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt
igneous
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Weathered limestone
Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Emerald
Beryl (variety Emerald), Be3Al2Si6O18 with Cr and/or V
Mineral
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Vesicular Basalt (Scoria)
Basalt with vesicular texture
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Granite Pebbles
Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8), and Mica)
igneous
Granite
Granite
igneous
Basalt with Alteration Crust
Basalt (SiO2 range 45-52%)
igneous