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Sodicanthophyllite

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Formula:
{Na}{Mg2}{Mg5}(AlSi7O22)(OH)2
Formula redefined in the 2012 nomenclature.
System:
Orthorhombic
Colour:
Clove-brown to dark ...
Lustre:
Vitreous
Hardness:
5½ - 6
Name:
Named as the sodium-bearing and magnesium-dominant orthoamphibole resembling anthophyllite.

In order to better distinguish between amphibole end-member member compositions, the CNMNC has decided to rename sodic-anthophyllite. The name is not yet (Nov 2012) decided.
Amphibole Group, Mg-Fe-Mn-Li Ortho-Amphibole Subgroup

Classification of Sodicanthophyllite

Hypothetical Mineral 2012
9.DD.05

9 : SILICATES (Germanates)
D : Inosilicates
D : Inosilicates with 2-periodic double chains, Si4O11; Orthoamphiboles
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Physical Properties of Sodicanthophyllite

Vitreous
Colour:
Clove-brown to dark brown, grey to white, green.
Streak:
White to greyish-white.
Hardness (Mohs):
5½ - 6

Crystallography of Sodicanthophyllite

Crystal System:
Orthorhombic

Chemical Properties of Sodicanthophyllite

Formula:
{Na}{Mg2}{Mg5}(AlSi7O22)(OH)2

Formula redefined in the 2012 nomenclature.
Essential elements:
All elements listed in formula:

Relationship of Sodicanthophyllite to other Species

Series:
Forms a series with Sodic-ferro-anthophyllite (see here)
Other Members of Group:
Anthophyllite Root Name☐{X2}{Z5}(Si8O22)(OH)2
Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
Gedrite Root Name☐{X22+}{Z32+Z23+}(Al2Si6O22)(OH)2
Grunerite☐{Fe22+}{Fe52+}(Si8O22)(OH)2
Manganocummingtonite☐{Mn22+}{Mg5}(Si8O22)(OH)2
Manganogrunerite☐{Mn22+}{Fe52+}(Si8O22)(OH)2
Proto-ferro-suenoite☐{Mn22+}{Fe52+}(Si8O22)(OH)2
Sodic-ferro-anthophyllite{Na}{Fe22+}{Fe52+}(AlSi7O22)(OH)2
Sodic-ferrogedrite{Na}{Fe22+}{Fe32+Al2}(Al3Si5O22)(OH)2
Sodicgedrite{Na}{Mg2}{Mg3Al2}(Al3Si5O22)(OH)2
9.DD.05Ferro-anthophyllite☐{Fe22+}{Fe52+}(Si8O22)(OH)2
9.DD.05Ferro-gedrite☐{Fe22+}{Fe32+Al2}(Al2Si6O22)(OH)2
9.DD.05Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
9.DD.05Holmquistite☐{Li2}{Mg3Al2}(Si8O22)(OH)2
9.DD.05Proto-ferro-suenoite☐{Mn22+}{Fe52+}(Si8O22)(OH)2
9.DD.05Sodic-ferro-anthophyllite{Na}{Fe22+}{Fe52+}(AlSi7O22)(OH)2
9.DD.05Sodic-ferrogedrite{Na}{Fe22+}{Fe32+Al2}(Al3Si5O22)(OH)2
9.DD.05Sodicgedrite{Na}{Mg2}{Mg3Al2}(Al3Si5O22)(OH)2
9.DD.05Ferro-holmquistite☐{Li2}{Fe32+Al2}(Si8O22)(OH)2
9.DD.05Proto-anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2

Other Names for Sodicanthophyllite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Sodicanthophyllite

Reference List:
Hawthorne F.C. (1983), Canadian Mineralogist: 2: 173.

Mineralogical Record: 29: 169-174.

Hawthorne, Frank C., and Roberta Oberti (2006), On the classification of amphiboles: Canadian Mineralogist:
44(1): 1-21.

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

Internet Links for Sodicanthophyllite

Mineral and/or Locality  
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