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Sodicanthophyllite

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Formula:
{Na}{Mg2}{Mg5}(AlSi7O22)(OH)2
Formula redefined in the 2012 nomenclature.
Colour:
Clove-brown to dark brown, grey to white, green.
Lustre:
Vitreous
Hardness:
5½ - 6
Crystal System:
Orthorhombic
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


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Classification of SodicanthophylliteHide

Notes:
Intermediate member of a solid-solution series
9.DD.05

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

Physical Properties of SodicanthophylliteHide

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

Chemical Properties of SodicanthophylliteHide

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

Formula redefined in the 2012 nomenclature.

Crystallography of SodicanthophylliteHide

Crystal System:
Orthorhombic

Synonyms of SodicanthophylliteHide

Other Language Names for SodicanthophylliteHide

Relationship of Sodicanthophyllite to other SpeciesHide

Other Members of this group:
Anthophyllite Root Name☐{X2}{Z5}(Si8O22)(OH)2
Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2Mon.
Gedrite Root Name☐{X2+2}{Z2+3Z3+2}(Al2Si6O22)(OH)2Orth.
Grunerite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
Manganocummingtonite☐{Mn2+2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
Manganogrunerite☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2Mon.
Proto-ferro-suenoite☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2Orth.
Sodic-ferro-anthophyllite{Na}{Fe2+2}{Fe2+5}(AlSi7O22)(OH)2Orth.
Sodic-ferrogedrite{Na}{Fe2+2}{Fe2+3Al2}(Al3Si5O22)(OH)2Orth.
Sodicgedrite{Na}{Mg2}{Mg3Al2}(Al3Si5O22)(OH)2Orth.
Forms a series with:

Related Minerals - Nickel-Strunz GroupingHide

9.DD.05Ferro-anthophyllite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Orth.
9.DD.05Ferro-gedrite☐{Fe2+2}{Fe2+3Al2}(Al2Si6O22)(OH)2Orth.
9.DD.05Gedrite☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2Orth.
9.DD.05Holmquistite☐{Li2}{Mg3Al2}(Si8O22)(OH)2Orth.
9.DD.05Proto-ferro-suenoite☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2Orth.
9.DD.05Sodic-ferro-anthophyllite{Na}{Fe2+2}{Fe2+5}(AlSi7O22)(OH)2Orth.
9.DD.05Sodic-ferrogedrite{Na}{Fe2+2}{Fe2+3Al2}(Al3Si5O22)(OH)2Orth.
9.DD.05Sodicgedrite{Na}{Mg2}{Mg3Al2}(Al3Si5O22)(OH)2Orth.
9.DD.05Ferro-holmquistite☐{Li2}{Fe2+3Al2}(Si8O22)(OH)2Orth.
9.DD.05Proto-anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m)

Other InformationHide

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 SodicanthophylliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hawthorne F.C. (1983) The crystal chemistry of the amphiboles. The Canadian Mineralogist: 21: 173-480.
Mandarino, J.A. (1998) The Second List of Additions and Corrections to the Glossary of Mineral Species (1995). The Amphibole Group. Mineralogical Record: 29: 169-174.
Hawthorne, F.C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist: 44: 1-21.
Hawthorne, F.C., Oberti, R., Harlow, G.E., Maresch, W.V., Martin, R.F., Schumacher, J.C., Welch, M.D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist: 97: 2031-2048.

Internet Links for SodicanthophylliteHide

Mineral and/or Locality  
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