Ottrelite

Ottrelite
Ottrelite
General
Category	Nesosilicate
Chemical formula	(Mn,Fe,Mg)2Al4Si2O10(OH)4
Strunz classification	09.AF.85
Identification
Molar mass	490.11
Colour	Pistachio green
Crystal habit	Granular
Twinning	Polysynthetic, {001}
Cleavage	{001} perfect; {110} likely
Mohs scale hardness	6-7
Luster	Vitreous to nearly adamantine on cleavages
Streak	Greenish, grayish
Diaphaneity	Translucent
Specific gravity	3.50
Density	3.52
Dispersion	r > v, strong
References	[1][2][3]

Ottrelite is a form of chloritoid. Its empirical formula is (Mn,Fe,Mg)₂Al₄Si₂O₁₀(OH)₄.

See also

Earth sciences portal

• List of minerals

References

1. ^ Ottrelite: mindat.org
2. ^ Ottrelite: webmineral.com
3. ^ Handbook of Mineralogy

External links

Media related to Ottrélite at Wikimedia Commons

This article about a specific silicate mineral is a stub. You can help Wikipedia by expanding it.v · Categories: Manganese minerals Iron minerals Magnesium minerals Aluminium minerals Nesosilicates Silicate mineral stubs Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? William Howard (engineer) Mouvement pour l'Autonomie de la Kabylie Look at other dictionaries: Ottrelite — Ot trel*ite, n. [From Ottrez, on the borders of Luxembourg.] (Min.) A micaceous mineral occurring in small scales. It is characteristic of certain crystalline schists. [1913 Webster] …   The Collaborative International Dictionary of English ottrelite — /o treuh luyt /, n. Mineral. a brittle mica containing manganese and similar to margarite in physical and chemical properties. [1835 45; < F ottrélite, named after Ottrez, Belgium, where it is found; see LITE] * * *       manganese rich variety… …   Universalium ottrelite — ˈä.trəˌlīt noun ( s) Etymology: French ottrélite, from Ottrez, Belgium, its locality + French lite : a gray to black mineral occurring in small scales in certain schists and being a variety of chloritoid …   Useful english dictionary ottrelite-slate — ottˈrelite slate noun A clay slate with minute plates of ottrelite • • • Main Entry: ↑ottrelite …   Useful english dictionary ottrelite — noun A form of the mineral chloritoid …   Wiktionary ottrelite — ot·tre·lite …   English syllables List of minerals N-R (complete) — It is currently not possible to have a complete list of minerals . The International Mineralogical Association is the international group that recognises new minerals and new mineral names, however minerals discovered before 1959 did not go… …   Wikipedia chloritoid — ▪ mineral       common silicate mineral, a basic aluminosilicate of manganese, magnesium, and iron. Once thought to be a member of the brittle mica group, chloritoid has been demonstrated to be structurally different; it is further distinguished… …   Universalium CHLORITOÏDES — Le nom des chloritoïdes provient de leur ressemblance avec les micas de la famille des chlorites, dont ils possèdent la couleur verte et les possibilités de clivages en fines lamelles. Les chloritoïdes sont des subnésosilicates: en plus des… …   Encyclopédie Universelle Phyllite — Phyl lite, n. [See {Phylo }.] (Min.) (a) A mineral related to ottrelite. (b) Clay slate; argillaceous schist. [1913 Webster] …   The Collaborative International Dictionary of English 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”