Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
Category
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
Milky Quartz
Silicon Dioxide (SiO2)
Snowflake Obsidian
Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)
Ironstone Concretion (Limonite/Goethite)
Iron oxide concretion (contains FeO(OH)·nH2O)
Labradorite (Larvikite variety)
(Na,Ca)(Al,Si)4O8 (Plagioclase Feldspar)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Agate variety)
Cryptocrystalline Quartz (SiO2)
Limonite (Yellow Ochre)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
Chrysocolla
Hydrated copper phyllosilicate mineral (Cu,Al)2H2Si2O5(OH)4·n(H2O)
Azurite and Malachite
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2(CO3)(OH)2)
Granite
Granite (Felsic Plutonic Rock)
Diamond (in a cluster setting)
Crystallized Carbon (C)
Jasper
Agate/Jasper (Microcrystalline Quartz, SiO2)
Chert (Flint variety)
Chert (SiO2)
Cat's Eye Moonstone (Feldspar)
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8) inclusions
Quartz (Clear/White)
Silicon Dioxide (SiO2)
Goethite (likely as part of Limonite/Ironstone)
Goethite (α-FeOOH)
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Green Fluorite
Calcium Fluoride (CaF2)
Sandstone (Stream-rounded Cobble)
Arenite (composed primarily of SiO2, Silica)
Ruby
Corundum (mineral species), variety: Ruby (Al2O3 with Cr3+ as the chromophore)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Epidote with Magnetite/Hematite inclusions
Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sand Grain (Silica/Quartz Grain)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Chrysocolla in Cuprite (Sonoran Sunrise)
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O) (Chrysocolla) and Cu2O (Cuprite)
Quartz Pebble (with Iron Inclusions)
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) with Iron Impurities
Howlite
Howlite (Calcium borosilicate hydroxide: Ca2B5SiO9(OH)5)
Celestite (Celestine)
Strontium sulfate (SrSO4)
Sandstone with Ironstone Concretion
Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))
Milky Quartz
Silicon Dioxide (SiO2)
Chert (often called Flint)
Silicon Dioxide (SiO2)
Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)