Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
igneous
Category
Mineral, Often Found As A Rock (Metamorphic)
Browse mineral, often found as a rock (metamorphic) specimens identified by the Rock Identifier community.
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral
Schist
Schist (primarily mica-schist)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Copper Ore (with Malachite and Azurite)
Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)
mineral
Stichtite (often found in Serpentinite)
Stichtite Mg6Cr2CO3(OH)16·4H2O
Mineral
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic
Black Tourmaline (Schorl)
Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Granitic Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Smoky Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
mineral
Rhodonite
Rhodonite (MnSiO3)
Mineral
Greenschist
Chlorite-actinolite schist
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Moonstone
Orthoclase Feldspar (composed of alternate layers of orthoclase and albite), (K,Na)AlSi3O8
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Mineral or Sedimentary Rock (with mineral inclusions)
Slate
Foliated Metamorphic Rock (composed mainly of clay minerals or micas)
metamorphic
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
sedimentary
Epidote (Unakite variety)
Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Slickenside in Limestone
Tectonized Limestone / Calcite (CaCO3)
metamorphic (localized) or sedimentary
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)
sedimentary
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (likely milky/gray variety)
Quartz (SiO₂)
Mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Gneiss (Metamorphic Rock)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Sandstone Concretion
Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)
sedimentary
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Nuummite
Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Corundum (Sapphire in Host Rock)
Corundum (Aluminum Oxide, Al2O3)
mineral