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Sodic-ferro-anthophyllite

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Formula:
{Na}{NaFe
2+
 
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
System:OrthorhombicColour:Clove-brown to dark ...
Lustre:VitreousHardness:5½ - 6
Member of:Mg-Fe-Mn-Li Ortho-Amphibole Subgroup > Amphibole Group
Name:Named as the sodium-bearing and ferrous-iron-dominant member of the anthophyllite series.


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}{NaFe
2+
 
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Essential elements:Fe, H, Na, O, Si
All elements listed in formula:Fe, H, Na, O, Si

Relationship of Sodic-ferro-anthophyllite to other Species

Series:Forms a series with Sodicanthophyllite (see here)
Member of:Mg-Fe-Mn-Li Ortho-Amphibole Subgroup > Amphibole Group
Other Members of Group:

- +
Anthophyllite
☐{Mg
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
Ferro-anthophyllite
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Ferrogedrite
☐{Fe
2+
2
}{Fe
2+
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Gedrite
☐{Mg
 
2
}{Mg
 
3
Al
 
2
}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Holmquistite
☐{Li
 
2
}{Mg
 
3
Al
 
2
}(Si
 
8
O
 
22
)(OH)
 
2
Protoferro-anthophyllite
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Protomangano-ferro-anthophyllite
☐{Mn
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
Sodic-ferrogedrite
{Na}{Fe
2+
2
}{Fe
2+
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
Sodicanthophyllite
{Na}{NaMg}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
Sodicgedrite
{Na}{Mg
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
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.05Ferrogedrite
☐{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.05Protoferro-anthophyllite
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Protomangano-ferro-anthophyllite
☐{Mn
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Sodicanthophyllite
{Na}{NaMg}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Sodic-ferrogedrite
{Na}{Fe
2+
2
}{Fe
2+
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DD.05Sodicgedrite
{Na}{Mg
 
2
}{Mg
 
4
Al}(Al
 
2
Si
 
6
O
 
22
)(OH)
 
2
9.DD.05Ferroholmquistite
☐{Li
 
2
}{Fe
2+
3
Al
 
2
}(Si
 
8
O
 
22
)(OH)
 
2
9.DD.05Protoanthophyllite
☐{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.

Internet Links for Sodic-ferro-anthophyllite

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