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Sodicanthophyllite

Formula:
[Na][NaMg][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
System:OrthorhombicColour:Clove-brown to dark ...
Lustre:VitreousHardness:5½ - 6
Name:Named as the sodium-bearing and magnesium-dominant member of the anthophyllite series


Amphibole Group, Mg-Fe-Mn-Li Ortho-Amphibole Subgroup

Classification of Sodicanthophyllite

IMA status:Approved
Strunz 8th edition ID:8/F.12-40
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 Sodicanthophyllite

Lustre: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][NaMg][Mg
 
5
][(OH)
 
2
|Si
 
8
O
 
22
]
Essential elements:H, Mg, Na, O, Si
All elements listed in formula:H, Mg, Na, O, Si

Relationship of Sodicanthophyllite to other Species

Series:Forms a series with Sodic-ferro-anthophyllite (see here)
Related Minerals - Nickel-Strunz Grouping):

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

Other Names for Sodicanthophyllite

Synonyms:
Na AnthophylliteSodium-anthophyllite
Other Languages:
German:Na-Anthophyllit
Natriumanthophyllit
Spanish:Sodicanthophyllita

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 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.

Articles/Blogs about Sodicanthophyllite

Internet Links for Sodicanthophyllite

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  • Raman and XRD data at RRUFF project
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