Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite and Calcite inclusions
igneous
Category
Mineral (Synthetic)
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Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Sandstone (Quartzose Sandstone)
Arenite
sedimentary
Granite
Granite (Phaneritic Quartz Monzonite)
igneous
Wishing Stone (Basalt or Siltstone with Quartz/Calcite Vein)
Basalt (SiO2+MgO+FeO) or Siltstone with a Quartz (SiO2) or Calcite (CaCO3) vein
igneous or sedimentary
Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Rutilated Quartz (with Garnet pendant)
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
mineral
Amazonite
Potassium Feldspar (KAlSi3O8)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Granite Pebble
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
Mineral / Sedimentary
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
igneous
Sandstone (Pebble)
Arenite (primarily SiO2)
sedimentary
Fossilized Shark Tooth
Bioapatite (Calcium Hydroxyapatite) replacement
mineral
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
mineral
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Granite
Granite (a felsic intrusive igneous rock composed primarily of quartz, feldspar, and mica)
igneous
Basalt with Secondary Mineral Inclusions
Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)
igneous
Amygdaloidal Basalt
Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)
igneous
Sandstone (Fluvial Pebble)
Arenite
sedimentary
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
sedimentary
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Hematite
Iron (III) Oxide (Fe2O3)
mineral
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
metamorphic
Chert with Quartz Druzy
Microcrystalline Quartz (SiO2) with Drusy Quartz Coating
sedimentary
Quartz Vein in Host Rock (often Granite or Schist)
Silicon Dioxide (SiO2) within host matrix
mineral with metamorphic or igneous host
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Blue Dumortierite in Quartz
Al7(BO3)(SiO4)3O3 (Dumortierite)
mineral
Chalcopyrite in Quartz (Gold-bearing Ore)
CuFeS2 (Chalcopyrite)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode
mineral
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
igneous
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
sedimentary
Caliche (also known as hardpan, calcrete, kankar)
Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.
Mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral