What minerals are in epidote?

Associated minerals are prehnite, chlorite, laumontite, quartz and calcite (Grant, 1901). — Epidote is abundant in the metamorphosed basalts west of Drummond where it fills amygdules and replaces original igneous minerals. Some outcrops rich in epidote are in SE NE Sec.

Is epidote a mineral or non mineral?

Epidote is an abundant rock-forming mineral, but one of secondary origin. It occurs in marble and schistose rocks of metamorphic origin. It is also a product of hydrothermal alteration of various minerals (feldspars, micas, pyroxenes, amphiboles, garnets, and others) composing igneous rocks.

Is epidote a mafic mineral?

It is widespread in metamorphic rocks. Epidote is a very common hydrothermal alteration mineral. It is usually found in mafic igneous rocks.

Is epidote mined?

The epidote from this locality is widely known and specimens of it are found in museums and private collections throughout the world (Leavens and Thomssen, 1977). The mine is closed to private collection and as of 2004 is being mined by Doug Toland.

How are the epidote minerals divided into subgroups?

Epidote-group minerals are divided into three subgroups. (1) Members of the clinozoisite subgroup are derived from the mineral clinozoisite Ca 2 Al 3 [Si 2 O 7 ] [SiO 4 ]O (OH) by homovalent substitutions only. The key cation- and anion-sites are A1 = M 2+, A2 = M 2+, M1 = M 3+, M2 = M 3+, M3 = M 3+, O4 = O 2−, O10 = (OH)−.

What are the colors of the epidote group?

It presentations strong pleochroism, the pleochroic colors being commonly inexperienced, yellow and brown. Clinozoisite is green, white or faded rose-pink group species containing very little iron, therefore having the equal chemical composition as the orthorhombic mineral zoisite.

What kind of mineral is epidote in Virginia?

Epidote: A metamorphic mineral and silicate mineral group. Epidote is a metamorphic mineral and the name of a silicate mineral group. Epidote: Epidote from Rockbridge County, Virginia. This specimen is approximately 4 inches (10 centimeters) across. What is Epidote?

What kind of stones are made of epidote?

Common in metamorphosed limestones with calcium rich garnets, diopside, vesuvianite, and calcite. Epidote has no significant use as an industrial mineral and has only minor use as a gemstone. High-quality transparent crystals are sometimes cut into faceted stones.