Jasper
Silicon dioxide (SiO2)
Category
Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.
Jasper
Silicon dioxide (SiO2)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
Botryoidal Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
Pebble (likely a type of sandstone or quartzite pebble)
Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.
Red Jasper
Jasper (Silica with Hematite inclusions), SiO2
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Red Jasper
Microcrystalline Quartz (SiO2) with Hematite inclusions
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
Pyrite
Iron Disulfide (FeS2)
Turquoise
Hydrated phosphate of copper and aluminum; CuAl6(PO4)4(OH)8·4H2O
Hematite
Iron(III) oxide (Fe2O3)
Carnelian Agate
Silicon Dioxide with Hematite impurities (SiO2 + Fe2O3)
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
Red Jasper (River Polished)
Silicon Dioxide (SiO2) with Hematite impurities
Quartz Geode
Silicon Dioxide (SiO2) in a concretionary structure
Jasper
Silicon Dioxide (SiO2) with impurities
Jasper with Quartz Veining
Silicon Dioxide (SiO2) with impurities
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Silicon Dioxide (SiO2)
Hematite (Concretion)
Iron(III) oxide (Fe2O3)
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
Carnelian (Flame Polished)
Carnelian (SiO2 with Iron Oxide impurities)
Chalcedony (Botryoidal)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with iron oxide and other mineral impurities
Fluorite (Rainbow Fluorite Point)
Calcium Fluoride (CaF2)
Polished River Jasper
Silicon Dioxide (SiO2) with iron and other mineral inclusions
Blue Celestite (with Galena)
Strontium sulfate (SrSO4) and Lead sulfide (PbS)
Green Jasper
Jasper (Silicon Dioxide, SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2 + Fe2O3
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Quartz Druzy in Brecciated Matrix
Silicon Dioxide (SiO2) in Lithic Breccia
Chalk
Calcium Carbonate (CaCO3)
Garnet
Garnet (X3Y2(SiO4)3)
Celestine (Celestite)
Strontium sulfate (SrSO4)
Kyanite
Kyanite (Al2SiO5)
Quartz (River Pebble)
Quartz (SiO₂ - Silicon Dioxide)
Turquoise
Turquoise, CuAl6(PO4)4(OH)8·4H2O
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Celestite (Celestine)
Celestine (Strontium Sulfate, SrSO4)
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)