Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Category
Mineral Variant
Browse mineral variant specimens identified by the Rock Identifier community.
Botryoidal Chalcedony (Desert Rose / Agate)
Silicon Dioxide (SiO₂)
Mineral variant
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
Mineral variant
Yellow Aventurine (Yellow Quartz)
Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica
Mineral (variant of Quartz)
Desert Rose
Gypsum (CaSO4·2H2O) or Barite (BaSO4) inclusions in sand
mineral
Carnelian
Carnelian (SiO2 variant)
mineral
Amazonite
K(AlSi3O8) - Microcline variant
mineral
Amazonite
K(AlSi3O8) - Microcline variant
mineral
Pink Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Asphalt (Bituminous Concrete)
Composite material (bitumen binder with mineral aggregate)
man-made rock (technosol)
Quartzite (specifically Milky Quartz variety)
Quartz (SiO2)
metamorphic
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Chert (or possibly Flint)
Chert (variant: Flint)
Sedimentary
Grey Jasper (Tumbled Quartz variant)
Jasper (Silicon Dioxide, SiO2)
sedimentary
Biological Bone (Patella/Knee)
Patella (part of the Human Skeletal System)
Organic Structure (Not a Rock)
Red Moss Agate (Jasper)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Orthoclase (Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
Mineral
Tiger's Eye
Silicon Dioxide (SiO2) with Limonite/Goethite pseudomorphs after Crocidolite
Mineral
Vesicular Basalt (Amygdaloidal)
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Agate
Silicon Dioxide (SiO2) - Chalcedony variant
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Tiger's Eye (dark/grey variant)
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Granite (Dioritic variant)
Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Obsidian
Volcanic glass (SiO2 - Silicon Dioxide with impurities)
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chert / Flint Nodules in Limestone
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Ferruginous Quartz (Carnelian-tinted Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
mineral
Yellow Diamond
Diamond (Carbon, C)
mineral
Granite
Granite (a phaneritic intrusive igneous rock)
igneous
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Botryoidal Chalcedony Geode
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral
Tiger's Eye (variations include Blue or Hawk's Eye)
Silicon Dioxide with Crocidolite inclusions (SiO2)
Metamorphic mineral
Chalk (Limestone variant)
Calcium Carbonate (CaCO3)
sedimentary
Psilomelane (Manganese Ore)
Psilomelane (Ba,H2O)2Mn5O10
mineral
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
mineral