Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Mineral Like Byproduct
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct in the encyclopedia
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Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende, chlorite, or manganese/iron oxides
mineral
Sandstone (Quartz-rich)
Arenite (composed primarily of SiO2)
sedimentary
Shale
Lutaceous Rock (Hydrous Aluminum Silicates)
sedimentary
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Chert Nodules in Limestone
Microcrystalline Quartz (SiO2) in Carbonate Matrix
sedimentary
Snowflake Obsidian
Volcanic glass containing Spherulitic inclusions (SiO2 + impurities)
igneous
Muscovite Mica (with Quartz matrix)
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Azurite
Azurite (Cu3(CO3)2(OH)2)
mineral
Beryllonite
Beryllonite (NaBePO4)
mineral
Shale with Iron Staining
Fissile Argillaceous Sedimentary Rock
sedimentary
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3 iron oxide staining)
sedimentary
Black Tourmaline (Schorl)
NaFe2+3Al6(BO3)3Si6O18(OH)4
mineral
Agate Geode
Silicon Dioxide (SiO2) - Banded Chalcedony with Quartz
mineral
Emerald in Matrix
Beryl (Be3Al2Si6O18) with trace amounts of Chromium/Vanadium
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Basalt with Epidote/Chlorite
Amygdaloidal Basalt (SiO2 with (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)))
igneous
Garden Quartz (Phantom Quartz)
Silicon Dioxide (SiO2) with various inclusions (often Chlorite, Hematite, or Iron)
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a Secondary Sedimentary/Volcanic cavity
mineral
Feldspar (likely Orthoclase or Plagioclase)
Tectosilicate Feldspar (KAlSi3O8 to (Ca,Na)(Al,Si)4O8)
mineral
Glauconitic Sandstone
Glauconitic Quartz Arenite (with K,Mg,Fe,Al silicate hydroxide)
sedimentary
Talc
Talc (Hydrated magnesium silicate, Mg3Si4O10(OH)2)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Chalcopyrite
Chalcopyrite (CuFeS2)
Mineral
Gold-bearing Quartz and Pyrite
Auriferous Quartz (SiO2 + Au) with Pyrite (FeS2)
mineral
Quartz Pebble (with Mica or Iron staining)
Silicon Dioxide (SiO2)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Blue Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
mineral
Indigo Gabbro
Gabbro (MaFIC intrusive rock)
igneous
Yellow Aventurine
Quartz (SiO2) with inclusions
mineral
Quartz (Milky/Gray variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Yellow/Tan Quartzite Pebble)
Silicon Dioxide (SiO2)
metamorphic
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Jasper Beads (Polished)
Silicon Dioxide (SiO2)
sedimentary
Dalmatian Jasper
Microgranular quartz with amphibole/tourmaline inclusions
igneous
Fossilized Nut / Coprolite / Concretion
Trace Fossil / Permineralized Plant Material
fossil
Ironstone Concretion / Chert Nodules
Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)
sedimentary
Mica Specimen (Schist / Muscovite)
Muscovite / Biotite Mica (KAl2(AlSi3O10)(F,OH)2)
metamorphic