Granite / Diorite (Granitic Pebble)
Intrusive Felsic/Intermediate Igneous Rock
igneous
Category
Mineral Composite
Browse mineral composite specimens identified by the Rock Identifier community.
Learn about Mineral Composite in the encyclopedia
View all →![Arfvedsonite (often mistakenly sold as Astrophyllite) (Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]) — mineral](https://media.rockidentification.com/6e8b521a-e0bc-4cec-8657-2fd2e3051a43-thumbnail.jpg)
Arfvedsonite (often mistakenly sold as Astrophyllite)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]
mineral
Quartz (Granular)
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Stilbite
Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
mineral
Apophyllite cluster
Fluorapophyllite-(K), KCa4(Si8O20)(F,OH)·8H2O
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Schist
Schist
metamorphic
Dalmatian jasper
Dalmatian stone, typically a leucocratic alkali-feldspar-rich porphyritic igneous rock with black arfvedsonite or aegirine inclusions
igneous
Petrified Wood
Silicified Wood (SiO2)
fossil
Ferruginous Sandstone
Ferruginous Quartz-Arenite
sedimentary
River Cobble (likely Basalt or Greenstone)
Mafic Igneous Rock (with possible chloritic alteration)
igneous
![Turquoise (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]) — Mineral](https://media.rockidentification.com/93306e99-639b-48d3-a99c-0b95cec08800-thumbnail.jpg)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Mineral
Red Sandstone
Arenite (primarily SiO2 with hematite/iron oxide coating)
sedimentary
Ironstone Concretion / Limonite-stained Siltstone
Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)
sedimentary
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Basalt with Epidote/Chlorite
Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))
igneous
Epidosite (Epidote-rich rock)
Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))
metamorphic
Basalt with Calcite Veining
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Bornite
Bornite (Cu5FeS4)
mineral
Chipped Glass/Plastic Fragment
Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic
Man-made material (simulant/artifact)
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Vesicular basalt (probable)
Basalt, mainly plagioclase feldspar and pyroxene, with possible olivine and iron oxides
igneous
Weathered quartz-rich rock fragment
Likely quartz-bearing sandstone or granitic rock; exact identification is uncertain from the image
mineral
Chromite
Chromite (FeCr2O4)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Baryte (Barite)
Barium sulfate (BaSO4)
mineral
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone (Heart-shaped pebble)
Sedimentary Quartz Sandstone
sedimentary
Green Calcite
Calcite (CaCO3)
mineral
Diorite
Intermediate plutonic igneous rock
igneous
Fossil Shark Tooth
Otodus sp. or Carcharocles sp. (likely fossilized Chondrichthyes)
fossil
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
sedimentary
Pegmatite
Igneous Pegmatite (Granitic Composition)
igneous
Granite
Granite (Phaneritic igneous rock)
igneous
Granite
Granitoid (comprised of Quartz, Feldspar, and Mica)
igneous
Blue Kyanite
Kyanite (Al2SiO5)
metamorphic
Red Sandstone
Ferruginous Sandstone (SiO2 with Fe2O3)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral