Chrysoprase
Chalcedony (cryptocrystalline silica containing nickel); Chemical Formula: SiO2 with Ni impurities
mineral
Category
Sedimentary (Secondary Classification For A Weathered Mineral Specimen)
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Ferruginous Quartz (Iron-Stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz (vein quartz)
SiO2 (Silicon Dioxide)
Mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
Mineral
Ferruginous Sandstone (Ironstone)
Arenite with Iron-Oxide Cement (FeO(OH)·nH2O / Fe2O3)
sedimentary
Druzy Quartz (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
mineral
Banded Chert in Matrix
Microcrystalline Quartz (SiO2)
sedimentary
Jasper with Quartz inclusions
Silicon Dioxide (SiO2)
sedimentary
Blue Chalcedony
Microcrystalline Quartz (SiO2)
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
igneous
Greenschist
Greenschist facies rock
Metamorphic
Jasper
Silicon dioxide (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
mineral
Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose Sandstone)
Arenite (SiO2 primarily)
sedimentary
Turquoise (Blue Howlite / Magnesite imitation)
CuAl6(PO4)4(OH)8·4H2O (for natural Turquoise); Ca2B5SiO9(OH)5 (for Howlite)
mineral
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Yellow Jasper (Limonite-stained Chert)
Silicon Dioxide (SiO2) with Limonite/Goethite inclusions
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Brown Jasper (Likely)
Jasper (Cryptocrystalline Silicon Dioxide - SiO2)
Mineral
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 major component)
sedimentary
Jasper
Jasper (Silicate mineral, SiO2)
sedimentary
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Carnelian (Carnelian Agate)
Carnelian (Silicon Dioxide - SiO2)
mineral
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
White Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Gold Ore (in Quartz/Sulfide matrix)
Native Gold (Au) in Quartz (SiO2) and Pyrite (FeS2)
mineral
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Sandstone (Flagstone)
Arenite (composed primarily of SiO2)
sedimentary
Uraninite (Pitchblende)
Uranium dioxide (UO2)
mineral
Milky Quartz (Water-worn pebble/nodule)
Quartz (Silicon Dioxide - SiO2)
mineral
Kyanite (in Schist Matrix)
Kyanite (Al2SiO5)
metamorphic
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral