Septarian Nodule
Septarian Concretion (CaCO3, CaMg(CO3)2, SiO2)
sedimentary
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
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Vanadinite
Pb5(VO4)3Cl
mineral
Turquoise
CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)
mineral
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Limonite with Ironstone
Limonite (hydrated iron(III) oxide-hydroxides), FeO(OH)·nH2O
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O
mineral
Turquoise (with Hematite)
CuAl6(PO4)4(OH)8·4H2O
mineral
Limonite (Ironstone)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Porphyritic Basalt (or Andesite) containing Augite
Porphyritic Mafic Volcanic Rock
igneous
Granitoid (Pegmatitic Granite)
Granitoid with dominant Potassium Feldspar and Quartz
igneous
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Weathered Sandstone with Algae Growth
Arenite
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granitoid Gneiss with Feldspar Vein
Gneiss (High-grade Metamorphic Rock) with Potassium Feldspar (KAlSi3O8)
metamorphic
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Dalmation Stone
Dalmation Jasper (Igneous microcrystalline quartz with arfvedsonite)
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
mineral
Granite Pebble
Granite
igneous
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide Fe2O3 cement)
sedimentary
Labradorite
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)
mineral
Yellow Jasper Pebble
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Geode (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Drupa or Druzy Quartz on Geode Fragment
Crystalline Silicon Dioxide (SiO2)
mineral
Iron Concretion
Ferruginous concretion (Fe2O3·nH2O / FeO(OH))
sedimentary
Botryoidal Lace Agate
Agate (Silicon Dioxide, SiO2)
mineral
Geode or Concretion
Silica-based Concretion / Quartz Geode
sedimentary
Ironstone Concretion (Coprolite-like)
Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))
sedimentary
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Snowflake Obsidian
Spherulitic Obsidian (SiO2 + impurities)
igneous
Granite and Igneous Mix
Phaneritic Felsic to Mafic Intrusive Rocks
igneous
Conglomerate
Conglomerate Rock
sedimentary
Amazonite (Microcline Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Granite (with Quartz Vein and Biotite)
Granite (Plutonic Igneous Rock)
igneous
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Dyed Agate
Chalcedony (SiO2)
Mineral