Greenstone
Metabasalt / Greenschist
metamorphic
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
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Jasper and Quartzite Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary/metamorphic
Amygdaloidal Basalt with Agate/Zeolite Amygdules
Basalt (extrusive igneous rock) containing secondary mineral fillings
igneous
Ruby (Raw Corundum)
Al2O3 (Aluminum Oxide)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix
igneous
Porphyritic Basalt (Amygdaloidal)
Porphyritic Mafic Volcanic Rock (Amygdaloidal Basalt)
igneous
Graphite
Graphite (Carbon, C)
mineral
Quartz with Iron Oxide Inclusions
Silicon dioxide with limonite/hematite (SiO2)
mineral
Chert (Iron-stained)
Chert (SiO2)
sedimentary
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Red Jasper
Silicon dioxide (SiO2)
mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Limonite
Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Jasper with Purple Fluorite or Chalcedony
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Ochre / Limonite
Hydrated ferric oxide (FeO(OH)·nH2O)
mineral
Beach Agate / Chalcedony Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Granite Gneiss
Gneiss (containing quartz, alkali feldspar, plagioclase, biotite/amphibole)
metamorphic
Sandstone (Tumbled/River Pebble)
Arenite (composed primarily of SiO2)
sedimentary
Greenstone / Chert
Cryptocrystalline Quartz (SiO2) or Altered Basalt
sedimentary or metamorphic
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate)
mineral
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Chert (with Limestone/Carbonate matrix)
Sedimentary cryptocrystalline silica (SiO2)
sedimentary
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Pink Calcite
Calcium Carbonate (CaCO3)
mineral
Gneiss
Gneiss
metamorphic
Hematite
Iron Oxide (Fe2O3)
mineral
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary/igneous host
mineral
Red Jasper (with Quartz inclusions)
Silicon Dioxide (SiO2)
sedimentary (physico-chemical)
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
mineral