Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Category
Mineral (Occurring As A Rolled Clast)
Browse mineral (occurring as a rolled clast) specimens identified by the Rock Identifier community.
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Galena
Galena (Lead Sulfide), PbS
mineral
Alexandrite in Matrix
Chrysoberyl (BeAl2O4 with Chromium impurities)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
metamorphic
Hematite
Hematite (Fe2O3)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Moonstone
Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.
mineral
Dendritic Agate
Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2)
sedimentary
Malachite
Copper carbonate hydroxide, Cu2CO3(OH)2
mineral
Rose Quartz Beads
SiO2 (Silicon Dioxide with trace inclusions of Ti, Fe, or Mn)
mineral
Peridot in Basalt
Olivine ((Mg, Fe)2SiO4) in Basalt
mineral
Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Amber
Fossilized Tree Resin (Amorphous Hydrocarbon)
Mineral
Osumilite in Granite Matrix
(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30
mineral
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3
mineral
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Gold
Aurum (Au)
Mineral (Metal)
Epidote
Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Smoky Quartz (Herkimer-style)
Silicon Dioxide (SiO2)
mineral
Greenstone with Epidote or Quartz veins
Metabasalt (Greenstone facies)
metamorphic
Malachite in Matrix
Copper Carbonate Hydroxide (Cu2CO3(OH)2)
mineral
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
Mineral
Schist
Mica Schist
metamorphic
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Blue Sapphire (likely costume glass imitation)
Corundum (Al2O3) with iron/titanium impurities
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Rose Quartz (SiO2 with traces of Ti, Fe, or Mn)
mineral
Sodalite (in Matrix)
Sodalite Na8(Al6Si6O24)Cl2
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Rough Emerald Crystals
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral