Polished Rhodonite Obelisk
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
metamorphic
Category
Metamorphic Or Sedimentary
Browse metamorphic or sedimentary specimens identified by the Rock Identifier community.
Aventurine
Silicon Dioxide (SiO2 with inclusions of Fuchsite mica)
mineral
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
White Moonstone (Scolicite or White Feldspar var. )
Lattice-structure Silicate (KAlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
mineral
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Unakite
Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Yellow Jade
Jadeite or Nephrite (NaAlSi2O6 or Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Lazulite
Magnesium Aluminum Phosphate Hydroxide (MgAl2(PO4)2(OH)2)
mineral
Unakite
Epidotized Granite
metamorphic
Rutilated Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2 with Epidote/Tourmaline inclusions
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartzite
Quartzite (primarily SiO2 with inclusions like Dumortierite or Magnesio-riebeckite)
metamorphic
Diorite (Gneissic)
Diorite
igneous
Quartzite (River Pebble)
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Mica Schist
Mica Schist (Quartz-Biotit-Muscovite Schist)
metamorphic
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Quartz (chalcedony variety) or Limestone with Quartz Veins
SiO2 (for Quartz/Chalcedony); CaCO3 (for Limestone)
Mineral or Sedimentary Rock (with mineral inclusions)
Quartzite Pebble
SiO2 (Silicon Dioxide)
metamorphic
Unakite
Epidotized Granite
metamorphic
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Ruby
Corundum (Al2O3 with Chromium traces)
mineral
Ruby (Corundum)
Corundum (Aluminum Oxide) with chromium trace elements, Al2O3
mineral
Moonstone
Orthoclase Feldspar (containing Albite lamellae), (KAlSi3O8)
mineral
Schist
Mica Schist (Medium-grade Metamorphic Rock)
Metamorphic
Quartzite
Quartzite (primarily composed of SiO O₂)
Sedimentary Rock
Pebble (likely a type of sandstone or quartzite pebble)
Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.
Sedimentary rock
Seraphinite
Clinochlore (a variety of the chlorite group)
mineral
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Quartzite with Chlorite
Metamosphosed Quartz Sandstone (SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2 inclusions)
metamorphic
Schist
Mica Schist
metamorphic
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Unakite
Epidotized Granite
metamorphic