Yellow Ochre (Limonite)
Limonite (FeO(OH)·nH2O)
mineral
Category
Anthropogenic Sedimentary Style Organic Solid
Browse anthropogenic sedimentary style organic solid specimens identified by the Rock Identifier community.
Learn about Anthropogenic Sedimentary Style Organic Solid in the encyclopedia
View all →
Quartz Vein in Siltstone
Siltstone with Quartz (SiO2) inclusion
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Turquoise and Spiny Oyster (Heishi style beads)
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Spondylus (Spiny Oyster shell)
mineral and organic gemstone
Chalcedony (Yellow Jasper or Agate)
Microcrystalline Quartz (SiO2)
mineral
Ambergris
Ambrein (C30H52O)
mineraloid / organic geological substance
Seam Agate
Agate (Banded variety of Chalcedony, SiO2)
mineral
Shale with Vein Infillings
Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.
Sedimentary Rock
Coal (Anthracite or Bituminous)
Lithified plant matter (Carbon)
sedimentary
Botryoidal Goethite on Quartz
Goethite (α-Fe3+O(OH)) on Quartz (SiO2)
mineral
Quartz Geode (partially filled/solid)
Silicon Dioxide (SiO2)
sedimentary
Quartz Geode
Clear Quartz (Silicon Dioxide, SiO2)
mineral
Geode (Unopened)
Silica Concretion / Geode (Formula: SiO2 for quartz internal contents)
sedimentary
Quartz Geode
Quartz (Silicon Dioxide, SiO2) in a Geode
sedimentary
Amber
Succinite (Approximate formula: C10H16O)
Mineraloid
Black Onyx
Cryptocrystalline Quartz (SiO2 with organic/iron impurities)
mineral
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Chert Breccia
Brecciated Microcrystalline Quartz (SiO2)
sedimentary
Opal
Hydrated Silica (SiO2·nH2O)
mineral
Red Jasper
Silicon dioxide with iron impurities (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Polished Agate Geode
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Metaconglomerate
Protolith: Conglomerate (comprising SiO2, Al2O3, etc.)
metamorphic
Black Pearl (Tahitian-style Cultured Pearl)
Calcium Carbonate (Aragonite) with Conchiolin (CaCO3)
mineral
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
sedimentary
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous Phosphate of Copper and Aluminum)
mineral
Jasper (Mookaite style)
Silicon Dioxide (SiO2) with iron and manganese inclusions
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Yellow Jasper
Silicon dioxide (SiO2)
sedimentary
Geode (Unbroken)
Silicon Dioxide (SiO2) usually as Microcrystalline Quartz or Chalcedony
sedimentary
Geode (Chert or Quartz Nodule)
Silicon Dioxide (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Geode (Chert/Quartz)
Silicon Dioxide (SiO2)
sedimentary
Chert (Chalcedony/Agate variety)
Silicon dioxide (SiO2)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Agate (Puddingstone style)
Silicon Dioxide (SiO2) with impurities
mineral
Geode with Quartz/Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Geode or Concretion
Silica-rich Concretion or Unopened Geode (SiO2)
sedimentary
Opal
Hydrated silica (SiO2 "NH2O)
mineraloid
Quartz-veined Mudstone or Argillite
SiO2 (Quartz) in Siltstone/Mudstone matrix
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode
mineral