Crushed Stone (Gravel/Aggregates)
Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)
Category
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Crushed Stone (Gravel/Aggregates)
Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)
Ruby in Zoisite (Anyolite)
Anyolite (Combination of Corundum and Zoisite)
Schist
Chlorite/Mica Schist
Granite (Phaneritic Igneous Rock)
Granite
Sandstone (likely Quartzose Sandstone with mineral staining)
Arenite (composed mainly of SiO2)
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (Sedimentary rock composed of sand-sized minerals or rock grains)
Chalcedony
Silicon Dioxide (SiO2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Specular Hematite
Iron Oxide (Fe2O3)
Agate (specifically Botswana or Lake Superior style chalcedony)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
Placer Gold Nugget
Native Gold (Au)
Blue Lace Agate (Heat-treated/Crackle Quartz variety)
Silicon Dioxide (SiO2)
Blue Chalcedony
Chalcedony (SiO2)
Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)
Diorite (Igneous rock, intrusive, intermediate composition)
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Ferruginous Sandstone (Gerrit)
Arenite with Iron Oxide cementation
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Sandstone
Arenite (composed primarily of SiO2)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Basalt with Epidote/Chlorite
Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))
Granite
Granite (Felsic Plutonic Rock)
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
Tree Agate
Silicon Dioxide (SiO2) with Dendritic Inclusions
Aquamarine
Beryl (Be3Al2Si6O18 with trace Fe2+)
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Turquoise
Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)