Mindat Logo
Home Page Log In Messageboard The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Proto-ferro-anthophyllite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(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
Member of:Anthophyllite Group > Magnesium-iron-manganese Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
This page provides mineralogical data about Proto-ferro-anthophyllite.

Classification of Proto-ferro-anthophyllite

mindat.org URL:http://www.mindat.org/min-7254.html
Please feel free to link to this page.

Type Occurrence of Proto-ferro-anthophyllite

Co-type Localities:Hirukawa, Nakatsugawa City, Gifu Prefecture, Chubu Region, Honshu Island, Japan
Cheyenne Mt area, El Paso Co., Colorado, USA

Physical Properties of Proto-ferro-anthophyllite

Lustre:Vitreous
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Chemical Properties of Proto-ferro-anthophyllite

Formula:
☐{Fe
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(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.
Essential elements:Fe, H, O, Si
All elements listed in formula:Fe, H, O, Si

Relationship of Proto-ferro-anthophyllite to other Species

Member of:Anthophyllite Group > Magnesium-iron-manganese Amphibole Subgroup > w(OH, F, Cl)-dominant Amphibole Group > Amphibole Supergroup
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
Proto-anthophyllite
☐{Mg
 
2
}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
Proto-mangano-ferro-anthophyllite
☐{Mn
2+
2
}{Fe
2+
5
}(Si
 
8
O
 
22
)(OH)
 
2

Other Names for Proto-ferro-anthophyllite

Synonyms:
IMA1986-006
Other Languages:
Russian:Протоферроантофиллит

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 Proto-ferro-anthophyllite

Reference List:

- +
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

Best Localities for Proto-ferro-anthophyllite

Best of Species:Proto-ferro-anthophyllite

Internet Links for Proto-ferro-anthophyllite

Search Engines:
  • Look for Proto-ferro-anthophyllite on Google
  • Look for Proto-ferro-anthophyllite images on Google
    • Mineral Dealers:
  • Fabre Minerals - search for Proto-ferro-anthophyllite specimens
  • Buy minerals from YourMineralCollection
  • Search for minerals at Heliodor
  • Search for Proto-ferro-anthophyllite on Well-Arranged Molecules
  • Find Proto-ferro-anthophyllite on www.crystalclassics.co.uk
  • SpiriferMinerals.com - high quality low prices
  • The Arkenstone - Fine Minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy RARE Minerals from Rocks of Africa
  • webminerals
  • Fine Minerals from Weinrich Minerals, Inc.
  • Top quality minerals from Kristalle of California
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Proto-ferro-anthophyllite

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    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.
    USA
     
    • Colorado
      • El Paso Co.
    		Am.Min.: 84: 196; Journal of Mineralogical and Petrological Sciences: 97: 127-136.
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: 3rd Apr 2013 16:15:35
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds