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Potassic-ferro-ferri-taramite

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Formula:
K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2
The taramite root name minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 1.5 apfu < C(Al+Fe3++2Ti).

Potassic-ferro-ferri-taramite is defined with

A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: OH dominant
Crystal System:
Monoclinic
Name:
Named for the root name type locality, Walitarama, Mariupol, Ukraine with prefixes based on chemistry
This page provides mineralogical data about Potassic-ferro-ferri-taramite.


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Classification of Potassic-ferro-ferri-taramiteHide

Approved
Approval Year:
2012

Chemical Properties of Potassic-ferro-ferri-taramiteHide

Formula:
K(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2

The taramite root name minerals are sodium-calcium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 1.5 apfu < C(Al+Fe3++2Ti).

Potassic-ferro-ferri-taramite is defined with

A position: K dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: OH dominant
IMA Formula:
K(NaCa)(Fe2+3Fe3+2)(Si6Al2)O22(OH)2

Crystallography of Potassic-ferro-ferri-taramiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.06(3)
11.04(3)
8.53(70)
4.81(10)
4.53(8)
4.06(3)
3.89(5)
3.42(20)
3.29(25)
3.15(100)
2.97(10)
2.732(50)
2.605(30)
2.572(15)
2.392(10)
2.347(30)
2.301(10)
2.176(25)
1.350(5)
2.070(7)
2.033(25)
1.904(4)
1.880(6)
1.809(5)
1.762(4)
1.712(3)
1.663(25)
1.645(4)
1.601(l0)
1.574(4)
1.548(6)
1.531(5)
1.512(7)
1.484(7)
1.461(7)
1.447(30)
1.420(5)
1.379(10)
Comments:
XRD pattern are similar to that of richterite.

Type Occurrence of Potassic-ferro-ferri-taramiteHide

General Appearance of Type Material:
The mafic minerals occur as prismatic grains up to 3 mm long and from 0.5 to 2 mm thick, which are commonly sub- to euhedral.
The amphibole and the aegirine-augite poikilitically enclose a few sm~ll
rounded grains of feldspars and nepheline
Place of Conservation of Type Material:
Not given
Geological Setting of Type Material:
The amphibole occurs most commonlly as discrete grains in late stage nepheline-syenite dykes but is also found as a rim on other amphiboles in some of the metasomatic rocks. The mineral on which the optical determinations and analyses were carried out comes from a 15-foot dyke intruding nepheline-bearing gneisses

Synonyms of Potassic-ferro-ferri-taramiteHide

Relationship of Potassic-ferro-ferri-taramite to other SpeciesHide

Other Members of this group:
Ferri-fluoro-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)F2
Ferri-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2Mon.
Ferro-ferri-fluoro-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)F2
Ferro-ferri-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2
Ferro-fluoro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)F2
Ferro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
Fluoro-taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2Mon. 2/m : B2/m
Potassic-ferri-taramiteK(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)
Potassic-ferro-taramiteK{CaNa}{Fe2+3Al2}{Si6Al2}O22(OH)2Mon. 2/m : B2/m
Taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m

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.
Industrial Uses:
None

References for Potassic-ferro-ferri-taramiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brock, P.W.G., Gellatly, D.C., Von Knorring, O. (1964) Mboziite, a new sodic amphibole end member. Mineralogical Magazine: 33: 1057-1065.
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 Potassic-ferro-ferri-taramiteHide

Localities for Potassic-ferro-ferri-taramiteHide

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.
Somaliland
 
  • Awdal
    • Borama District
      • Darkainle complex
P.W.G.Brock, D.C. Gellatly, and O. Von Knorring(1964):Mboziite, a new sodic amphibole end member. Mineralogical Magazine, Vol 33, pp1057-65.
Tanzania (TL)
 
  • Mbeya Region
P.W.G.Brock, D.C. Gellatly, and O. Von Knorring(1964):Mboziite, a new sodic amphibole end member. Mineralogical Magazine, Vol 33, pp1057-65.
Mineral and/or Locality  
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