Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Category
Mineral With Metamorphic Or Sedimentary Host
Browse mineral with metamorphic or sedimentary host specimens identified by the Rock Identifier community.
Chert Pebble with Quartz Veins
Microcrystalline Quartz (SiO2)
sedimentary
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Red Shale
Lutite (primarily composed of Hydrous Aluminum Silicates with Hematite staining)
sedimentary
Dendrite (Manganese Oxide Dendrites)
Psilomelane or Pyrolusite on Matrix (typically MnO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Ironstone Concretion
Limonitic/Hematitic Concretion
sedimentary
Chert Nodules in Limestone
Microcrystalline Quartz (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in sedimentary/volcanic host
mineral
Laterite
Laterite (no specific mineral formula as it's a rock type)
Sedimentary
Ruby
Corundum (Aluminum Oxide with Chromium traces), Al2O3:Cr
mineral
Chalcedony (Botryoidal/Agate nodule)
Microcrystalline Quartz (SiO2)
mineral
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
sedimentary
Serpentinite
Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Quartz (Double-Terminated)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal (specifically a small Clear Quartz point)
Silicon Dioxide (SiO2)
mineral
Chert / Flint Conglomerate
Silicified Sedimentary Breccia (primarily SiO2)
sedimentary
Ruby
Corundum (Al2O3 with Chromium trace elements)
mineral
Geode with Quartz and possibly Jasper/Hematite
Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides
Mineral/Sedimentary Geode
Ironstone Concretion (Moqui Marble)
Iron-oxide Concretion (Hydrated ferric oxide, Fe2O3·nH2O)
sedimentary
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Agate Geode with Quartz Druzy
Chalcedony (SiO2) and Quartz (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Chert / Jasper
Silicon Dioxide (SiO2)
sedimentary
Green Aventurine and Clear Quartz
Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)
Mineral
Chalcedony in Matrix
Silicon Dioxide (SiO2)
mineral
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Mineral/Sedimentary Interface
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Blue Quartz with Dumortierite/Magnesio-riebeckite inclusions
Quartz (SiO2) containing Dumortierite (Al7(BO3)(SiO4)3O3)
igneous/metamorphic
Chert with Druzy Quartz Geode
Microcrystalline Quartz (SiO2)
sedimentary
Jasper with Agate and Quartz Inclusions
Silicon Dioxide (SiO2) - Chalcedony / Quartz aggregate
sedimentary
Quartz-veined Mudstone or Argillite
SiO2 (Quartz) in Siltstone/Mudstone matrix
sedimentary
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (Hydrous magnesium iron phyllosilicate)
metamorphic
Shatter Cone (Impactite)
Shock-metamorphosed rock
metamorphic
Smoky Quartz
SiO2 (Silicon Dioxide)
Mineral
Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral