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Proto-ferro-anthophyllite

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Formula:
☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2
The anthophyllite group are orthorhombic amphiboles in the magnesium-iron-manganese amphibole subgroup. The minerals in this root name group may have either Pnma or Pnmn (proto- prefixed name) space group symmetry. The anthophyllite group's composition is defined with A(Na+K+2Ca)<0.5 apfu and C(Al+Fe3++2Ti)<1 apfu.

Proto-ferro-anthophyllite has a Pnmn space group symmetry and is defined with Fe2+ as the dominant element both in the B and C positions.
Lustre:
Vitreous
Crystal System:
Orthorhombic
This page provides mineralogical data about Proto-ferro-anthophyllite.


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Physical Properties of Proto-ferro-anthophylliteHide

Vitreous

Chemical Properties of Proto-ferro-anthophylliteHide

Formula:
☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2

The anthophyllite group are orthorhombic amphiboles in the magnesium-iron-manganese amphibole subgroup. The minerals in this root name group may have either Pnma or Pnmn (proto- prefixed name) space group symmetry. The anthophyllite group's composition is defined with A(Na+K+2Ca)<0.5 apfu and C(Al+Fe3++2Ti)<1 apfu.

Proto-ferro-anthophyllite has a Pnmn space group symmetry and is defined with Fe2+ as the dominant element both in the B and C positions.

Crystallography of Proto-ferro-anthophylliteHide

Crystal System:
Orthorhombic

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

First Recorded Occurrence of Proto-ferro-anthophylliteHide

Synonyms of Proto-ferro-anthophylliteHide

Other Language Names for Proto-ferro-anthophylliteHide

Relationship of Proto-ferro-anthophyllite to other SpeciesHide

Other Members of this group:
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

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 Proto-ferro-anthophylliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 Proto-ferro-anthophylliteHide

Localities for Proto-ferro-anthophylliteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Japan
 
  • Honshu Island
    • Chubu Region
      • Gifu Prefecture
        • Nakatsugawa City
Phys.Chem.Min. (1998): 25: 366-377; Min.Rec.: 32: 418; Journal of Mineralogical and Petrological Sciences: 97: 127-136.; Sueno, S., Matsuura, S., Bunno, M., & Kurosawa, M. (2002). Occurrence and crystal chemical features of protoferro-anthophyllite and protomangano-ferro-anthophyllite from Cheyenne Canyon and Cheyenne Mountain, USA and Hirukawa-mura, Suisho-yama, and Yokone-yama, Japan. Journal of mineralogical and petrological sciences, 97(4), 127-136.
J. Mineral. Petrol. Sci., 97, 127-136.
USA (FRL)
 
  • Colorado
    • El Paso Co.
Am.Min.: 84: 196; Journal of Mineralogical and Petrological Sciences: 97: 127-136.
Mineral and/or Locality  
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