Mineral On Sedimentary

Quartz Crystal Point

Silicon Dioxide (SiO2)

Clear Quartz

Silicon dioxide (SiO2)

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (with potential Quartzite characteristics)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Biotite Gneiss

Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)

Quartz

Silicon Dioxide (SiO2)

Turquoise

Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

White Chalcedony (likely Common Opal or Milky Quartz)

Silicon Dioxide (SiO2)

Turquoise (likely Sleeping Beauty variety or treated Howlite imitation)

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Magnetite / Hematite rich ore

Magnetite (Fe3O4) or Hematite (Fe2O3)

Mica-rich Schist fragment

Mica Schist

Limonite (Ironstone Concretion)

Limonite (Hydrous ferric oxide mixture, FeO(OH)·nH2O)

Fossilized Shark Tooth (Basal Bone)

Otodus sp. (Mineralized Hydroxyapatite)

Sandstone

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Conglomerate

Conglomerate (clastic sedimentary rock)

Picture Jasper

Silicified sedimentary or volcanic rock (primarily SiO2)

Sandstone (Quartzose Sandstone)

Arenite (SiO2 principal component)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone (likely Quartzose)

Sandstone (Principally SiO2)

Sandstone

Arenite (primarily SiO2)

Chert (Brecciated Chert)

Silicon Dioxide (SiO2)

Sand Grain (Silica/Quartz Grain)

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)

Sandstone

Arenite (primarily Quartz, SiO2)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with iron oxide cement)

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Jasper (Petrified Wood variant)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Septarian Nodule (Septarian Dragon Stone)

Septarian Concretion (CaCO3 + Al2Si2O5(OH)4)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2 (Silicon Dioxide)

Sandstone

Clastic Sedimentary Rock (composed mostly of SiO2)

Sandstone (Banded)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Jasper

Silicon dioxide (SiO2) with impurities

Leopard Skin Jasper

Jasper (Silicon Dioxide with impurities), SiO2

Glauconite (Glauconitic Sandstone)

Glauconite [(K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2]

Banded Chert

Microcrystalline Quartz (SiO2)

Sandstone

Arenite (SiO2 primarily)

Sandstone (likely Arkose)

Arenite (composed mainly of SiO2 with Feldspar)