3.9" Lustrous Epidote, Calcite & Quartz Association - Morocco

 
This is a beautiful mineral association that contains pistachio-green epidote crystals in bow tie and fan shaped aggregates and calcite crystals on a bed of quartz. The specimen was collected at Imilchil in the Er Rachidia Province of Morocco.

Comes with an acrylic display stand.

Epidote is a green, silicate mineral that is commonly found in regionally metamorphosed rocks. It often forms lustrous, elongated and interconnected crystals that are highly coveted by collectors. While nearly all epidote is green it may take on many different shades and tones from yellowish to deep green.

Silicon Dioxide, also known as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.

Calcite, CaCO3, is a carbonate mineral and the most stable polymorph of calcium carbonate. The other polymorphs are the minerals aragonite and vaterite. Calcite crystals are trigonal-rhombohedral, though actual calcite rhombohedra are rare as natural crystals. However, they show a remarkable variety of habits including acute to obtuse rhombohedra, tabular forms, and prisms. Calcite exhibits several twinning types adding to the variety of observed forms. It may occur as fibrous, granular, lamellar, or compact. Cleavage is usually in three directions parallel to the rhombohedron form.
DETAILS
SPECIES
Epidote, Calcite & Quartz
LOCATION
Imilchil, Er Rachidia Province, Morocco.
SIZE
3.9 x 3.1"
CATEGORY
ITEM
#142734