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Sodic-ferro-anthophyllite

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Formula:
{Na}{Fe
2+
2
}{Fe
2+
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
Formula redefined in the 2012 amphibole nomenclature.
System:OrthorhombicColour:Clove-brown to dark ...
Lustre:VitreousHardness:5½ - 6
Member of:Magnesium-iron-manganese Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
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 Sodic-ferro-anthophyllite

IMA status:Approved
Strunz 8th edition ID:8/F.12-50
Nickel-Strunz 10th (pending) edition ID:9.DD.05

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

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

Crystallography of Sodic-ferro-anthophyllite

Crystal System:Orthorhombic

Chemical Properties of Sodic-ferro-anthophyllite

Formula:
{Na}{Fe
2+
2
}{Fe
2+
5
}(AlSi
 
7
O
 
22
)(OH)
 
2


Formula redefined in the 2012 amphibole nomenclature.
Essential elements:Al, Fe, H, Na, O, Si
All elements listed in formula:Al, Fe, H, Na, O, Si

Relationship of Sodic-ferro-anthophyllite to other Species

Series:Forms a series with Sodicanthophyllite (see here)
Member of:Magnesium-iron-manganese Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
Other Members of Group:

- +
Anthophyllite Group
☐{B
 
2
}{C
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
Cummingtonite
☐{Mg
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
Gedrite Group
☐{B
2+
2
}{C
2+
3
C
3+
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Grunerite
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Manganocummingtonite
☐{Mn
2+
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
Manganogrunerite
☐{Mn
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Sodic-ferrogedrite
{Na}{Fe
2+
2
}{Fe
2+
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
Sodicanthophyllite
{Na}{Mg
 
2
}{Mg
 
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
Sodicgedrite
{Na}{Mg
 
2
}{Mg
 
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
9.DD.05Ferro-anthophyllite
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Ferro-gedrite
☐{Fe
2+
2
}{Fe
2+
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DD.05Gedrite
☐{Mg
 
2
}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DD.05Holmquistite
☐{Li
 
2
}{Mg
 
3
Al
 
2
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Proto-mangano-ferro-anthophyllite
☐{Mn
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Sodicanthophyllite
{Na}{Mg
 
2
}{Mg
 
5
}(AlSi
 
7
O
 
22
)(OH)
 
2
9.DD.05Sodic-ferrogedrite
{Na}{Fe
2+
2
}{Fe
2+
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DD.05Sodicgedrite
{Na}{Mg
 
2
}{Mg
 
3
Al
 
2
}(Al
 
3
Si
 
5
O
 
22
)(OH)
 
2
9.DD.05Ferro-holmquistite
☐{Li
 
2
}{Fe
2+
3
Al
 
2
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Proto-anthophyllite
☐{Mg
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2

Other Names for Sodic-ferro-anthophyllite

Other Languages:
German:Natrium-Ferro-Anthophyllit

Other Information

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

References for Sodic-ferro-anthophyllite

Reference List:

- +
Hawthorne F.C. (1983), Canadian Mineralogist: 21: 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

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Best of Species:Sodic-ferro-anthophyllite

Internet Links for Sodic-ferro-anthophyllite

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    Locality Updated: Blue Moon Mine (Porcupine Mine; Blue Cloud Mine; Red Cloud Mine; Percupine Mine; American Eagle Mine; Bullion Hill Mine), Quartzburg, Hornitos District, West Belt, Mariposa Co., California, USAFrom Chester S. Lemanski, Jr., 19th Jun 2013 16:09:09