Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Green Onyx (Banded Calcite)
Travertine (CaCO3 - Calcium Carbonate)
sedimentary
Vesicular Basalt (Scoria)
Basalt (Extrusive Igneous Rock)
igneous
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Gneiss
Gneiss
metamorphic
Basalt with Plagioclase Microphenocrysts
Amygdaloidal or Porphyritic Basalt
igneous
Gneiss
Gneissic Metamorphic Rock
metamorphic
Blue Sapphire (Tumbled/Polished)
Corundum (Al2O3)
mineral
Yellow Quartz (Citrine appearance)
Silicon Dioxide (SiO2)
mineral
Pink Dyed Agate
Silicon Dioxide (SiO2) with synthetic pigment
mineral
Satin Spar
Fibrous Gypsum (CaSO4·2H2O)
mineral
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
mineral
Celestite (Celestine)
Celestine (Strontium Sulfate, SrSO4)
Mineral
Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)
Silicon Dioxide (SiO2) with iron inclusions
mineral
Limonite (Hydrated Iron Oxide / Bog Iron)
FeO(OH)·nH2O
Mineral (Sedimentary context)
Diamond (in a Gold Jewelry Setting)
Carbon (C)
mineral
Stichtite in Serpentine (Atlantasite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)
Metamorphic rock / Mineral variety
Gneiss
Gneiss
metamorphic
Basalt with Iron Oxides
Mafic Igneous Rock (Mafite)
igneous
Botryoidal Hematite (Kidney Ore)
Hematite (Fe2O3)
mineral
Limonite
FeO(OH)·nH2O (Hydrated iron oxide)
mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
mineral
Agate (or Chalcedony)
Silicon Dioxide (SiO2)
mineral
Heulandite with Stilbite
Heulandite-Ca ((Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O) and Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
mineral
Brecciated Chert
Sedimentary Chert (SiO2) with Calc-Silicate mineralization
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Turquoise
Turquoise (Hydrated copper aluminum phosphate, CuAl6(PO4)4(OH)8·4H2O)
Mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
igneous
Gneiss (High-grade Metamorphic Rock)
Gneiss (Metamorphic silicate rock)
metamorphic
White Quartz (Milky Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Basalt
Mafic Igneous Rock (composed primarily of plagioclase, pyroxene, and olivine)
igneous
Rough Star Sapphire (Corundum)
Al2O3 (Aluminum Oxide)
mineral
Limonite (Yellow Ochre)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Shattuckite (Blue Quartz/Jasper Matrix)
Shattuckite (Copper Silicate Hydroxide - Cu5(SiO3)4(OH)2)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
sedimentary