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Anthophyllite Root Name Group

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About Anthophyllite Root Name GroupHide

Formula:
☐{X2}{Z5}(Si8O22)(OH)2
The Anthophyllite root name minerals is defined as orthorhombic magnesium-iron-manganese amphiboles with Pnma or Pnmn space group symmetry. The space group Pnma is assumed, and the space group Pnmn (where determined) is indicated by the prefix proto.

The individual minerals are defined based on their dominant elements in the X (= IMA B) and Z (= IMA C) positions.

The root-name mineral, anthophyllite are defined with Mg as the dominant element in both the X (= IMA B) and Z (= IMA C) positions. Minerals in this group with other dominant elements are named with pre-fixes in accordance with the guidelines establised in the 2012 amphibole nomenclature.

In mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.
Name:
From the Latin "anthophyllum," meaning "clove" (itself derived from the Greek άνθος for "flower" and φύλλον for "leaf" ), in allusion to its common clove-brown colour.
This page provides mineralogical data about Anthophyllite Root Name Group.


Chemical Properties of Anthophyllite Root Name GroupHide

Formula:
☐{X2}{Z5}(Si8O22)(OH)2

The Anthophyllite root name minerals is defined as orthorhombic magnesium-iron-manganese amphiboles with Pnma or Pnmn space group symmetry. The space group Pnma is assumed, and the space group Pnmn (where determined) is indicated by the prefix proto.

The individual minerals are defined based on their dominant elements in the X (= IMA B) and Z (= IMA C) positions.

The root-name mineral, anthophyllite are defined with Mg as the dominant element in both the X (= IMA B) and Z (= IMA C) positions. Minerals in this group with other dominant elements are named with pre-fixes in accordance with the guidelines establised in the 2012 amphibole nomenclature.

In mindat.org we avoid using variables with the same symbol as elements and deviate from the IMA nomenclaure in that we use X rather than B, Z rather than C and (OH,F,Cl,O) rather than W.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0017657AnthophylliteWarren B, Modell D (1930) The structure of Anthophyllite H2 Mg7 (Si O3)8 _cod_database_code 1010935 Zeitschrift fur Kristallographie 75 161-17919300293
0010994AnthophylliteWalitzi E M, Walter F, Ettinger K (1989) Verfeinerung der kristallstruktur von anthophyllit vom Ochsenkogel/Gleinalpe, Osterreich Zeitschrift fur Kristallographie 188 237-24419890293
0003184Proto-anthophylliteKonishi H, Groy T L, Dodony I, Miyawaki R, Matsubara S, Buseck P R (2003) Crystal structure of protoanthophyllite: A new mineral from the Takese ultramafic complex, Japan American Mineralogist 88 1718-172320030293
CIF Raw Data - click here to close

Relationship of Anthophyllite Root Name Group to other SpeciesHide

Other Members of this group:
Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2Mon.
Gedrite Root Name Group☐{X2+2}{Z2+3Z3+2}(Al2Si6O22)(OH)2Orth.
Grunerite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
Papikeite Root Name GroupNaX2+2(Z2+3Al2)(Si5Al3)O22(OH)2
Sodic-ferro-anthophyllite{Na}{Fe2+2}{Fe2+5}(AlSi7O22)(OH)2Orth.
Sodicanthophyllite{Na}{Mg2}{Mg5}(AlSi7O22)(OH)2Orth.
Suenoite Root Name Group☐{X2}{Z5}(Si8O22)(OH)2
Group Members:
Anthophyllite ☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
Ferro-anthophyllite ☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Orth.
Proto-anthophyllite ☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnnm
Proto-ferro-anthophyllite ☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Orth.
Chemically related to group(s):
Gedrite Root Name Group☐{X2+2}{Z2+3Z3+2}(Al2Si6O22)(OH)2

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 Anthophyllite Root Name GroupHide

Reference List:
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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 Anthophyllite Root Name GroupHide

 
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