Turquoise and Hematite
Turquoise (CuAl6(PO4)4(OH)8·4H2O) and Hematite (Fe2O3)
mineral
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
Ruby in Zoisite
Anyolite (Zoisite with Corundum) Member of the Epidote Group
metamorphic
Hypersthene
Hypersthene ((Mg,Fe)SiO₃)
Mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Black Star Diopside (beads)
Diopside (CaMgSi2O6) - a member of the pyroxene group
Mineral
Moldavite
Silica glass with small amounts of aluminum, iron, and other elements
Mineraloid / Tektite
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Seraphinite
Clinochlore (Mg,Fe)5Al(AlSi3O10)(OH)8 - specific variety for Seraphinite due to its fibrous inclusions and chatoyancy.
Mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
sedimentary
Sandstone
Arenite (mostly SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Onyx (Black) and Mother of Pearl Inlay
Silicon Dioxide (SiO2) for Onyx; Aragonite (CaCO3) for Mother of Pearl
mineral
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Chert (and/or Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Plume Agate or Moss Agate
Silicon dioxide (SiO2)
Mineral
Eudialyte
Na15Ca6Fe3Zr3Si26O72(OH,Cl)2 (Eudialyte Group)
mineral
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Chert (specifically Black Chert or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartzite
Hydrothermal Quartz or Quartzite (SiO2)
metamorphic
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
BROWN GRANITE (likely 'Tan Brown' or similar)
Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)
igneous
Chert (specifically a stream-worn Chert Nodule)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper (Green Jasper/Chert)
Silicon Dioxide (SiO2)
sedimentary
Serpentinite
Serpentinite (group of minerals: Antigorite, Lizardite, Chrysotile)
metamorphic
Asphalt (Bituminous Concrete)
Bituminous Concrete / Pavement
man-made (synthetic rock)
Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
igneous
Chert (Grey-Green Flint)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Chalcedony (Agate/Quartz pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Quartzite (River Pebble)
Metamorphic Quartzite (primarily SiO2)
metamorphic
Jasper (likely a variety of Yellow or Mustard Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary (chemically precipitated mineral)
Leopard Skin Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Mineral
Serpentinite (Serpentine Rock)
Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.
Metamorphic
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral