Epidote Group Information's

 

Epidote Group

The epidote group is a group of related minerals with similar structures and physical and chemical properties. The minerals in the epidote group include:

• Epidote
• Allanite
• Piemontite
• Zoisite
• Clinozoisite
• Tawmawite

Chemical Formula

The general chemical formula for the epidote group is A2B3(SiO4)3(OH).

Discovery

The epidote group minerals have been known since ancient times, but were first recognized as a group in the 19th century. The name "epidote" comes from the Greek word "epidosis", which means "growing together", referring to the common occurrence of these minerals in close association with each other.

Physical Properties

The epidote group minerals are typically green, brown, or black in color and have a vitreous to resinous luster. They have a hardness of 6-7 on the Mohs scale and a specific gravity of 3.2-3.5. They are brittle and have conchoidal fractures.

Optical Properties

The epidote group minerals are typically biaxial positive, with refractive indices of nα = 1.670-1.740, nβ = 1.680-1.750, and nγ = 1.700-1.780. They have moderate to high birefringence and a weak to moderate pleochroism.

Ranking of Rarity

The epidote group minerals are relatively common, with epidote and zoisite being the most abundant members.

Occurrence (countries)

The epidote group minerals are found in a wide variety of geological settings, including igneous, metamorphic, and sedimentary rocks. They are found in many countries around the world, including:

• Epidote: Austria, Canada, France, Italy, Norway, Sweden, Switzerland, USA
• Allanite: Australia, Canada, China, Greenland, Japan, Norway, Russia, USA
• Piemontite: Italy, Switzerland, USA
• Zoisite: Austria, Canada, Italy, Norway, Switzerland, Tanzania, USA
• Clinozoisite: Austria, Canada, Italy, Norway, Switzerland, Tanzania, USA
• Tawmawite: Myanmar

Healing Properties

The epidote group minerals are believed to have a number of healing properties, including:

• Stimulating the immune system
• Enhancing energy and vitality
• Relieving stress and anxiety
• Improving digestion
• Reducing inflammation
• Stimulating creativity and self-expression

Uses

The epidote group minerals have a variety of uses, including:

• As gemstones (e.g. epidote, piemontite, zoisite)
• As collectors' specimens
• In ceramics and glassmaking
• In jewelry-making
• In metallurgy
• In the production of cement and concrete

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Tawmawite Information's

 

Tawmawite Properties

Tawmawite is a rare mineral that has several unique properties. It is a silicate mineral and has the chemical formula of Cu6Hg3As4S12. It was discovered in 1974 in the Tawmaw mine in northern Shan State, Myanmar. Tawmawite is a member of the enargite family, which is composed of copper arsenic sulfides. It is named after the Tawmaw mine where it was first discovered.

Physical Properties

• Color: black, dark brownish-black
• Luster: metallic
• Streak: black
• Hardness: 3 on the Mohs scale
• Density: 5.95 g/cm3
• Cleavage: {100} good, {010} fair, {001} poor

Optical Properties

• Transparency: opaque
• Refractive Index: n = 2.58 - 2.88
• Birefringence: none
• Pleochroism: none

Ranking of Rarity

Tawmawite is an extremely rare mineral and is considered to be one of the rarest minerals in the world.

Occurrence (countries)

Tawmawite has only been found in the Tawmaw mine in northern Shan State, Myanmar. It has not been found in any other locations around the world.

Healing Properties

There is no scientific evidence to suggest that tawmawite has any healing properties.

Uses

Tawmawite is a rare mineral and is not used for any commercial purposes. It is mainly collected by mineral collectors and museums for its rarity and unique properties.

Clinozoisite Information's

Clinozoisite

Overview

Clinozoisite is a mineral that belongs to the epidote group and has the chemical formula Ca2Al3Si3O12(OH).

Varieties

Clinozoisite has a few different varieties, including:

• Clinothulite
• Thulite

Chemical Formula

The chemical formula for clinozoisite is Ca2Al3Si3O12(OH).

Physical Properties

• Color: Green, brown, gray, white, pink, red, blue
• Crystal System: Monoclinic
• Hardness: 6.5 - 7
• Cleavage: Good in one direction
• Luster: Vitreous
• Streak: White

Optical Properties

• Refractive Index: 1.707 - 1.725
• Birefringence: 0.018 - 0.019
• Optical Character: Biaxial positive
• Dispersion: Weak

Ranking of Rarity

Clinozoisite is not a particularly rare mineral, and can be found in many locations around the world.

Occurrence (Countries)

Clinozoisite can be found in the following countries:

• Switzerland
• Italy
• Germany
• Austria
• USA
• Canada
• Chile
• Peru
• Russia
• China
• Japan

Healing Properties

Clinozoisite is said to have the following healing properties:

• Helps to reduce stress and anxiety
• Encourages positive thinking
• Can help to alleviate physical pain

Uses

Clinozoisite is used as a gemstone and a mineral specimen, and is sometimes used as a source of aluminum. 

Zoisite information's

 

Zoisite

Zoisite is a mineral belonging to the sorosilicate family. It has the chemical formula Ca2Al3(SiO4)3(OH), and it is often found in a variety of colors and forms. Here is some more information about zoisite:

Varieties

Zoisite comes in a variety of colors and forms. Some of the most well-known varieties include:

• Tanzanite - blue to violet-blue zoisite, first discovered in Tanzania in 1967
• Thulite - pink to reddish-pink zoisite, first discovered in Norway in 1820
• Anyolite - green zoisite with ruby inclusions, first discovered in Tanzania in the 1950s

Discovery

Zoisite was first discovered in Austria in 1805 by the mineralogist Sigmund Zois. Since then, zoisite has been found in many locations around the world.

Physical Properties

• Hardness: 6.5 - 7
• Density: 3.15 - 3.36 g/cm3
• Color: Typically brown, green, or pink, but can also be blue, violet-blue, or colorless
• Luster: Vitreous to subadamantine
• Streak: White

Optical Properties

• Refractive index: 1.69 - 1.70
• Birefringence: 0.008 - 0.012
• Pleochroism: Weak to moderate

Ranking of Rarity

Zoisite is not considered a particularly rare mineral, but some of its varieties, like tanzanite, can be quite valuable.

Occurrence (countries)

Zoisite can be found in many locations around the world, including:

• Austria
• Canada
• India
• Madagascar
• Norway
• Tanzania
• United States

Healing Properties

Zoisite is said to have a number of healing properties, including:

• Helping to soothe the mind and emotions
• Stimulating creativity and self-expression
• Assisting with detoxification and purification of the body
• Boosting the immune system

Uses

Zoisite and its varieties have a number of uses, including:

• Tanzanite is often used in jewelry
• Thulite is sometimes used as a decorative stone
• Anyolite is used in carvings and other decorative objects
• Zoisite in general is sometimes used as a gemstone or for ornamental purposes

 

Piemontite Information

Piemontite is a mineral species that belongs to the epidote group. It was first discovered in the Piedmont region of Italy, and was named after its place of discovery. Here is some information about piemontite:

Physical Properties

• Chemical formula: Ca2Fe3+Al2(SiO4)(Si2O7)O(OH)
• Color: brown, reddish brown, greenish brown, black
• Hardness: 6.5 - 7 on the Mohs scale
• Luster: vitreous to subresinous
• Streak: yellow-brown to orange-brown

Optical Properties

• Refractive index: nα = 1.734 - 1.743, nβ = 1.735 - 1.745, nγ = 1.745 - 1.755
• Birefringence: δ = 0.011 - 0.012
• Pleochroism: weak, yellowish brown to reddish brown

Ranking of Rarity

Piemontite is a relatively rare mineral, and is not commonly found in large quantities. It is ranked as a 7 out of 10 on the rarity scale.

Occurrence (countries)

Piemontite can be found in several countries around the world, including:

• Italy
• Switzerland
• USA
• Canada
• Japan
• New Zealand
• Tanzania

Healing Properties

Piemontite is believed to have healing properties for the heart and circulatory system. It is also thought to help with emotional balance and stability.

Uses

Piemontite is primarily used as a mineral specimen for collectors. It is also sometimes used as a gemstone, but is not commonly used in jewelry due to its rarity and high cost.

Allanite Information's

 

Allanite

#Allanite is a rare earth silicate mineral that typically occurs in metamorphic rocks. It was first discovered in 1810.

Chemical Formula

The chemical formula of #Allanite is Ca(Ce,La,Y)2-3Al3(SiO4)3(OH).

Physical Properties

• Color: Brown, greenish-brown, yellow-brown, black
• Crystal System: Monoclinic
• Hardness: 5.5 to 6
• Luster: Vitreous, resinous
• Streak: White to pale brown
• Cleavage: Imperfect
• Fracture: Subconchoidal to uneven
• Tenacity: Brittle
• Specific Gravity: 3.4 to 4.1

Optical Properties

• Refractive Index: 1.712 to 1.784
• Birefringence: 0.070 to 0.080
• Pleochroism: Strong
• Optical Sign: Biaxial (+/-)

Ranking of Rarity

#Allanite is considered a rare mineral.

Occurrence (countries)

#Allanite is found in several countries including:

• Canada
• Greenland
• Norway
• Sweden
• USA

Healing Properties

There are no known healing properties of #Allanite.

Uses

#Allanite is primarily used as an ore of rare earth metals and as a gemstone.