Mineral - Actinolite

Name and first discovery : Named in 1794 by Richard Kirwan from the Greek "aktina" for ray and "lithos" for stone in reference to the fibrous nature of the original specimens.

Chemistry : Actinolite is an intermediate member of the actinolite-tremolite series within the amphiboles. Actinolite has a Mg/(Mg+Fe2+) ratio of 0.5–0.9, and ferroactinolite has a ratio of less than 0.5.

Synonyms : stibolite, stralite, zillerthite, zillertite, actynolite

Varieties : Emeraldite

literature

Dana, J. D., & Dana, E. S. (1892). The system of mineralogy of James Dwight Dana, 1837-1868: descriptive mineralogy . J. Wiley & sons.