River Jasper (Chert/Chalcedony mix)
Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions
sedimentary
Category
Mineral (Specifically, A Variety Of The Mineral Species Pyrope Almandine Garnet)
Browse mineral (specifically, a variety of the mineral species pyrope almandine garnet) specimens identified by the Rock Identifier community.
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Jasper
Jasper (Silicate mineral, SiO2)
sedimentary
Yellow Jasper (Chert variant)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi₃O₈)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Quartz (Smoky or Impure Variety)
Silicon Dioxide (SiO2)
mineral
Obsidian
Amorphous volcanic glass (70-75% SiO2)
igneous
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Basalt with Magnetite inclusions
Basalt (Mafic silicate rock) potentially containing Magnetite (Fe3O4)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Clear Quartz (Rock Crystal Fragments)
Silicon Dioxide (SiO2)
mineral
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Pink Quartz
Silicon Dioxide (SiO2) with trace inclusions
mineral
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Cream River Jasper
Silicified microcrystalline quartz (SiO2)
sedimentary
Black Onyx
Onyx (Silicon Dioxide, SiO2)
mineral
Black Onyx (Tumbled)
Silicon Dioxide (SiO2)
mineral
Snakeskin Agate
Agate (Cryptocrystalline Quartz, SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Jasper with Agate Inclusions
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (SiO2)
Mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Jasper (Milky/Cream Variety)
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary (chemical/biological)
Sandstone (Stream-rounded)
Arenite (SiO2 based)
sedimentary
Quartz (Amethyst variety)
Silicon Dioxide (SiO2)
mineral
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
mineral
Beads (likely glass or man-made material)
N/A (artificial material)
Man-made material, not a natural rock or mineral specimen
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Labradorite
(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)
mineral
Agate
Silicon Dioxide (SiO2) - variety: Chalcedony
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral