w(O)-dominant Amphibole Group
This page is currently not sponsored. Click here to sponsor this page.
|The W(O)-dominant Amphibole Group is defined with WO > 1 apfu.|
The W(O)-dominant Amphibole Group belongs to the amphibole supergroup and contains the amphibole minerals with WO2- > W((OH)+F+Cl)2-.
The additional charge in the W position compared with the amphiboles in the W(OH,F,Cl)-dominant Amphibole Group is accompanied by the occurrence of additional high-charge (≥3+) Z-cations (= IMA C cations) ordered at the M(1) and/or M(3) sites; the aggregate charge at Z position (=IMA C position) may thus exceed 12+.
Any W(O)-dominant amphibole corresponding to a (OH) dominant root name will be named with an oxo-prefix.
On 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.
Classification of w(O)-dominant Amphibole Group
|IMA status:||Approved 2012|
Please feel free to link to this page.
Chemical Properties of w(O)-dominant Amphibole Group
The W(O)-dominant Amphibole Group is defined with WO > 1 apfu.
Relationship of w(O)-dominant Amphibole Group to other Species
|Member of:||Amphibole Supergroup|
|Other Members of Group:|
|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 w(O)-dominant Amphibole Group
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
Internet Links for w(O)-dominant Amphibole Group
Localities for w(O)-dominant Amphibole Group
The 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.
(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.
|Fade toolbar when not in focus||Fix toolbar to bottom of page|
|Hide Social Media Links|
|Slideshow frame delay||seconds|
Locality Updated: San Miguel Mine, Moctezuma, Mun. de Moctezuma, Sonora, MexicoFrom David Von Bargen, 24th May 2013 23:52:46