What is tremolite actinolite?
What is tremolite actinolite?
Tremolite is a member of the amphibole group of silicate minerals with composition: Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2. Tremolite forms by metamorphism of sediments rich in dolomite and quartz. Tremolite forms a series with actinolite and ferro-actinolite.
What is tremolite asbestos?
The fibrous form of tremolite is one of the six recognised types of asbestos. This material is toxic, and inhaling the fibers can lead to asbestosis, lung cancer and both pleural and peritoneal mesothelioma.
Is tremolite a Pleochroic?
Color – Tremolite is clear to light green, may be slightly pleochroic. The color and pleochroism are more pronounced with greater Fe content. Cleavage – Tremolite shows typcial amphibole cleavage. One cleavage in longitudinal sections, and two creating a 60o-120o cleavage angle when viewed in end section.
What are the properties of actinolite?
Actinolite
| Physical Properties | |
|---|---|
| Fracture | Uneven |
| Luster | Vitreous |
| Transparency | Transparent to translucent |
| Streak | White |
Does tremolite contain asbestos?
Asbestos occurs in large natural deposits, or as contaminants in other minerals. For example, tremolite asbestos may occur in deposits of chrysotile, vermiculite, and talc.
What is tremolite used for?
Tremolite ranges in color from a milky white to a dark green and is found in other minerals such as talc and vermiculite. Tremolite was previously used in a variety of products such as paint, sealants, insulation, roofing and plumbing materials.
What type of rock is actinolite?
metamorphic rocks
Actinolite is commonly found in metamorphic rocks, such as contact aureoles surrounding cooled intrusive igneous rocks. It also occurs as a product of metamorphism of magnesium-rich limestones.
What is the color of tremolite?
A calcium magnesium silicate, tremolite forms a solid-solution series with ferroactinolite, where iron substitutes in increasing amounts for magnesium. The color of tremolite varies with increasing iron content from colorless to white in pure tremolite to gray, gray-green, green, dark green and nearly black in other specimens.
What is the composition of actinolite tremolite?
Tremolite Composition: Ca2Mg5Si80 22 (0 H )2, is an end member of an isomorphous series. Iron may replace magnesium in part, and when present in amounts greater than 2 per cent, the mineral is called actinolite Tremolite Diagnostic Features: Characterized by slender prisms and good prismatic cleavage.
Fibrous Tremolite: one of the six identified varieties of asbestos. About forty, 200 tons of tremolite asbestos is mined yearly in India. it’s miles otherwise found as a contaminant.
What is fibrous tremolite?
It is the product of both thermal and regional metamorphism and is an indicator of metamorphic grade because it converts to diopside at high temperatures (1,065°F/575°C or above). Fibrous Tremolite: one of the six identified varieties of asbestos.
