Pink Granite Gneiss
Granitic Gneiss
metamorphic
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Learn about Sedimentary (Secondary Mineral) Within Igneous in the encyclopedia
View all →
Red Jasper / Carnelian Chalcedony
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
gemstone
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
igneous
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2)
mineral
Chert with Quartz/Calcite Vein
Microcrystalline Silica (SiO2)
sedimentary
Gneiss with Quartz Vein
Metamorphic Gneiss
metamorphic
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Copper Ore (Malachite/Chrysocolla bearing)
Cupriferous rock containing secondary copper minerals like Cu2CO3(OH)2
mineral
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Rough Quartz in Pegmatite Matrix
Quartz (Silicon Dioxide - SiO2) in Granitic Pegmatite
igneous
Amethyst
Silicon dioxide (SiO2) with iron impurities
mineral
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mineral
Obsidian Fetish Carving with Turquoise Inlay
Volcanic Glass with Turquoise (CuAl6(PO4)4(OH)8·4H2O)
igneous
Gneiss
Gneiss
metamorphic
Quartz (with Iron staining)
Silicon Dioxide (SiO2)
mineral
Iron-stained Milky Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (extrusive volcanic rock with secondary mineral infilling)
igneous
Limonite or Ironstone
Hydrated iron oxide-hydroxide, approximately FeO(OH)·n(H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Vesicular Basalt with Secondary Mineral Inclusions
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Rose Quartz
Silicon dioxide (SiO2)
mineral
Lavender Chalcedony
Silicon Dioxide (SiO2)
mineral
Limonite (often after Pyrite)
Limonite (FeO(OH)·nH2O)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Basalt with Quartz/Calcite Veining
Aphanitic Mafic Basalt with secondary mineral veining
igneous
Limonite / Brown Iron Ore
Hydrous Iron Oxide (FeO(OH)·nH2O)
mineral
Banded Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz-encrusted Matrix
Silicon Dioxide (SiO2) with Ferruginous Sandstone
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral
Basalt with Calcite Veins
Extrusive Igneous Rock
igneous
Banded Gneiss
Gneiss
metamorphic
Amethyst (Quartz)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Limonite with Hematite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
sedimentary
Likely basalt
Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase, clinopyroxene, and often olivine
igneous
Vesicular Basalt
Basalt with vesicular texture
igneous
Vesicular Basalt (Scoria)
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Vesicular Basalt (Scoria)
Vesicular Basalt
igneous