Diamond
Diamond (pure carbon, C)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Diamond
Diamond (pure carbon, C)
Limonite after Pyrite (Pseudomorph)
FeO(OH)·nH2O following FeS2
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Carnelian (Orange Agate)
Carnelian (variety of Chalcedony, SiO2)
Chert (Banded Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Citrine Quartz Geode
Silicon Dioxide (SiO2) with iron impurities
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide) - SiO2
Granite Pebble
Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)
Chrysocolla in Cuprite (Sonoran Sunrise)
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O) (Chrysocolla) and Cu2O (Cuprite)
K2 Jasper (K2 Granite)
Azurite in Granite (Al2Cu3(CO3)2(OH)2 in NaAlSi3O8)
Chert (Pebble)
Silicon Dioxide (SiO2)
Quartz Geode (with possible Manganese or Goethite coating)
Silicon Dioxide (SiO2)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Basalt (River Rock)
Basalt
Chrysocolla on Matrix
Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide - SiO2)
Sugilite
Sugilite [KNa2(Fe,Mn,Al)2Li3Si12O30]
Limonite Sandstone
Ferruginous Sandstone (Hydrated Iron Oxide)
Ferruginous Sandstone (Gozzan/Ironstone)
Arenite with Limonite/Goethite cement (FeO(OH)·nH2O)
Basalt (with possible quartz veinsing)
Basalt
Quartz River Pebble (Quartzite)
Metamorphic Quartzite (SiO2)
Green Apophyllite
Fluorapophyllite-(K), KCa4(Si8O20)(F,OH)·8H2O
Quartzite Pebble (with possible inclusion)
Metamorphosed Quartz Sandstone (SiO2 with impurities)
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Rhodochrosite in Quartz
Manganese Carbonate (MnCO3)
Iron-stained Quartz
Silicon Dioxide (SiO2) with Limonite/Hematite inclusions
Chrysocolla
Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O
Sandstone
Clastic Sedimentary Rock (composed of SiO2 grains)
Chrysocolla in Matrix
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Silicate/Secondary Copper Mineral)
Carnelian
Carnelian (a variety of Chalcedony, SiO ₂)
Basalt River Cobble
Basalt
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Turquoise
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Quartz Pebble (with Iron Staining)
Crystalline Silicon Dioxide (SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Azurite with Malachite and Limonite
Azurite Cu3(CO3)2(OH)2 / Malachite Cu2CO3(OH)2
Pumice
Pumice (a highly vesicular volcanic rock)
Pink Granite (Water-worn pebble)
Phaneritic Felsic Igneous Rock
Banded Sandstone (Liesegang Rings)
Sedimentary sandstone with Iron oxide precipitates