Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
sedimentary
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Mineral
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
sedimentary
Granitoid (Granite/Gneiss)
Granitoid silicate rock, primarily quartz and feldspar
igneous/metamorphic
Quartzite with vugs/druzy quartz
Crystalline Silicon Dioxide (SiO2)
metamorphic
Limestone
CaCO3 (Mainly Calcite or Aragonite)
sedimentary
Limestone (Micrite/Chalky variety)
Calcium Carbonate (CaCO3)
sedimentary
White Marble (Tumbled)
Recrystallized Calcite (CaCO3)
metamorphic
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
not a rock (synthetic material)
The user-provided image does not contain a rock or mineral specimen
N/A
Agate (translucent pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Olivine in Basalt matrix
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
igneous
Granite Pebble
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Pink Granite (Fragment)
Pink Granite (dominated by Potassium Feldspar: KAlSi3O8)
Igneous
Basalt with Plagioclase Phenocrysts
Porphyritic Basalt
igneous
Wishing Stone (Gneiss or Basalt with Quartz Vein)
Gneiss or Metabasalt (with a Quartz or Calcite intrusion)
metamorphic
Limestone (specifically Dolomitic/Crystalline Limestone)
Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)
sedimentary
Quartz
Silicon dioxide (SiO2)
Mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Pink Granite (Gneissic Granite)
Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)
igneous
Peridot
Olivine (Mg, Fe)2SiO4
Mineral
Rhodonite
Manganese silicate (MnSiO3)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Granite / Quartz Vein Rock
Granitoid with Quartz (SiO2)
igneous
Granite
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
mineral
Pearl
Calcium Carbonate (CaCO3) with Conchiolin
mineral
Peridot
Olivine ((Mg, Fe)2SiO4)
mineral
Pearl
Calcium carbonate (CaCO3) - Aragonite/Calcite variety
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Serpentine
Serpentine group minerals (e.g., Antigorite, Chrysotile, Lizardite). Chemical formula: (Mg, Fe)₃Si₂O₅(OH)₄
Mineral, often found as a rock (metamorphic)
Basalt
Basalt
igneous
Olivine (Peridot when gem-quality)
Olivine Group (Magnesium Iron Silicate, (Mg,Fe)2SiO4)
mineral
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Pearl
Calcium carbonate (CaCO3) as Aragonite or Calcite
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral