Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
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.
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Chert (Flint Pebbles)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Druzy Quartz on Ironstone
Silicon Dioxide (SiO2) on Limonitic Ironstone
mineral
Agate
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt
igneous
Native Copper
Native Copper (Cu)
mineral
Carnelian and Mixed Agates
Cryptocrystalline Quartz (SiO2 with Iron Oxide impurities)
mineral
Cavansite
Cavansite (Ca(VO)Si4O10·4H2O)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Vesicular Basalt (Amygdaloidal)
Amygdaloidal Basalt
igneous
Granite Cobble
Granitoid (typically containing Quartz SiO2, Feldspar KAlSi3O8, and Mica minerals)
igneous
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Epidote (with Quartz and Feldspar)
Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
River Cobble (Basaltic/Andesitic)
Mafic to Intermediate Volcanic Rock
igneous
Granite (Weathered)
Phaneritic Felsic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Azurite Geode
Azurite (Cu3(CO3)2(OH)2)
mineral
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Granite River Rock
Phaneritic Felsic Igneous Rock (Granite)
igneous
Chrysocolla in Quartz (Gem Silica)
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) / SiO2 (Quartz)
mineral
Red Jasper (River Pebble)
Silicon Dioxide (SiO2) with hematite impurities
sedimentary (microcrystalline quartz)
Sandstone Concretion
Sedimentary concretion
Sedimentary
Banded Agate (specifically Black Sardonyx/Onyx variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chrysocolla in Malachite
Cu2CO3(OH)2 (Malachite) / Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
mineral
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Banded Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Mineral
Milky Quartz (Water-worn Pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Basalt River Pebble
Basalt (Aphanitic Mafic Volcanic Rock)
igneous
Fragmented Sedimentary Pebble
Clastic Sedimentary Specimen
sedimentary
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Quartz (Grain)
Silicon Dioxide (SiO2)
mineral
Granite
Phaneritic Felsic Igneous Rock
igneous
Orange Quartz
Silicon Dioxide (SiO2) with iron inclusions
mineral