Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
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.
Chlorastrolite (Greenstone)
Chlorastrolite (variety of Pumpellyite) - Ca2(Mg,Fe)Al2(SiO4)(Si2O7)(OH)2 · H2O
mineral
Quartz (Milky/River Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Gold
Native Gold (Au)
mineral
Chert (Arrowhead or Projectile Point)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Limonite-stained Granite
Felsic Plutonic Rock with Hydrated Iron Oxides
igneous
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Mineral
Chert Pebble / Brachiopod Fossil Internal Mold
Silicon Dioxide (SiO2) / Fossil: Brachiopoda (generic internal mold)
sedimentary
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Pink Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Quartzite with Iron Hydroxide Staining
Quartzite (primarily SiO2) with Limonite/Goethite staining
metamorphic
Fossilized Wood (with Coal and Limonite)
Petrified Wood (Silicified or Carbonized Flora)
sedimentary
Botryoidal Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Rough Star Sapphire (Corundum)
Al2O3 (Aluminum Oxide)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Mineral within a Sedimentary Rock
Chert (with Quartz Veining)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Chert (specifically a weathered Chert nodule or fragment)
Chert; Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Azurite
Azurite (Cu3(CO3)2(OH)2)
mineral
Crystalline Quartz (Rough)
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Silver (Native Silver)
Native Silver (Ag)
mineral
Rose Quartz
Quartz (Silicon Dioxide - SiO2) with trace amounts of titanium, iron, or manganese
mineral
Azurite
Azurite (Copper Carbonate Hydroxide), Cu3(CO3)2(OH)2
mineral
Staurolite (Fairy Stone)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Orbicular Jasper (Ocean Jasper)
Silicon Dioxide (SiO2) with iron and magnesium inclusions
mineral
Milky Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Quartz (Rock Crystal) with minor impurities
Quartz (SiO2)
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Mineral
Quartz (Milky/Yellowish Pebble)
Silicon Dioxide (SiO2)
mineral
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
River Cobble (likely Basalt or Rhyolite)
Extrusive Igneous Rock (Mafic or Intermediate)
igneous