Iron-stained Quartz
Silicon Dioxide with Hematite/Limonite impurities (SiO2 + Fe2O3)
mineral
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Processed Mineral Product) in the encyclopedia
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Sugilite
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)
mineral
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Gold Nugget
Native Gold (Au)
mineral
Blue Quartz (specifically Dumortierite Quartz)
SiO2 (Silicon Dioxide) with inclusions of AlAl6BSi3O18 (Dumortierite)
mineral
Native Gold (in Jewelry form)
Gold (Au)
Mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Angel Aura Quartz (Treated Clear Quartz)
Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum
mineral
Rhodonite
Rhodonite (Manganese silicate, (Mn,Fe,Mg,Ca)SiO3)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - Chalcedony containing Iron Oxide impurities
mineral
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Biotite Schist
Biotite Schist (Rich in K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Banded Agate (Polished Slice)
Chalcedony (cryptocrystalline Quartz), SiO2
mineral
Quartz Geode/Cluster
Quartz (SiO2)
mineral
Plum Blossom Tourmaline
Tourmaline with Lepidolite (Na,Ca)(Li,Mg,Al)3Al6(BO3)3Si6O18(OH)4
igneous
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl) in Matrix
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Quartz (in matrix)
Quartz (SiO₂)
mineral
Milky Quartz (Water-Worn Pebble)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Snowflake Obsidian
Vitreous volcanic silicate (SiO2 with Cristobalite inclusions)
Igneous
Banded Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Silicon Dioxide with Iron inclusions (SiO2)
sedimentary
Graywacke Pebble (River Stone)
Graywacke (Lithic wacke)
sedimentary
Jasper (Iron-rich Microcrystalline Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Jasper with Epidote Vein
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Argillaceous microcrystalline quartz (SiO2 with Fe2O3 inclusions)
sedimentary
Dragon Vein Agate (Dyed)
SiO2
mineral
Banded Agate
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Blue Lace Agate
Chalcedony (SiO2) with trace minerals
mineral
Pink Granite
Granite (High K-Feldspar variety)
igneous
Asphalt (Road Aggregate)
Bituminous Conglomerate / Asphalt Concrete
Anthropogenic (Man-made)
Blue Aventurine
Silicon Dioxide (SiO2) with inclusions of Dumortierite
Mineral (silicate variety)
Orange Quartzite / Aventurine
Silicon Dioxide (SiO2)
metamorphic
![Lapis Lazuli (Sodium aluminum silicate with sulfur (main component: Lazurite [(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2])) — metamorphic](https://media.rockidentification.com/25f9a526-bf2a-4c6d-85ae-75c6abca8287-thumbnail.jpg)
Lapis Lazuli
Sodium aluminum silicate with sulfur (main component: Lazurite [(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2])
metamorphic
Titanium Quartz (Rough)
Titanium-included Silicon Dioxide (SiO2 + Ti)
mineral