Rhodonite Tumbled Chips
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
Category
Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.
Rhodonite Tumbled Chips
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
Slag
Metallurgical by-product
Chert (Cream Variety)
Microcrystalline silica (SiO2)
Banded Calcite (often sold as 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Cinnabar in Quartz
Silicon Dioxide (SiO2) with Mercury Sulfide (HgS) inclusions
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·H2O)
Chert
Chert (SiO2)
Porphyry (Flower Stone)
Porphyritic Basalt or Andesite
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily SiO2)
Chrysocolla in Matrix
Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·nH2O
Gold Nugget
Native Gold (Au)
Sandstone Beach Pebble
Clastic sedimentary rock (SiO2 with iron oxide cement)
N/A (The provided image is a storyboard/digital document)
Diamond (Princess Cut Faceted Gemstone)
Native Carbon (C)
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
Quartzite Pebble
Quartzite (SiO2 based)
Sandstone
Arenite (SiO2 based)
Anthracite Coal
Anthracite (Carbon based)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 based)
Painted Garden Rock (likely Granite or Limestone base)
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3) based substrate with Acrylic/Enamel pigments
Sandstone
Arenite (composed primarily of SiO2)
Quartz / Quartz Cluster
Silicon Dioxide (SiO2)
Basalt
Basalt (Mafic volcanic rock)
Sparkling Druzy Quartz on Matrix
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (composed predominantly of sand-sized grains, 0.0625 to 2 mm)
Green Calcite
Calcium Carbonate (CaCO3)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone
Arenite (primarily SiO2)
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
Sandstone (Quartzose)
Arenite (primarily SiO2)
Black Tourmaline (Schorl)
Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
Cone-in-cone structure (Limestone)
Cone-in-cone structure (Secondary Sedimentary Structure)
Native Copper
Native Copper (Cu)
Sandstone
Arenite (primarily Quartz Arenite)
Peach Aventurine
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
Kyanite
Kyanite (Al2SiO5)
Blue Kyanite
Kyanite (Al2SiO5)