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Iwateite

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About IwateiteHide

Formula:
Na2BaMn(PO4)2
Colour:
Colrless
Specific Gravity:
4.06 (Calculated)
Crystal System:
Trigonal
Name:
Named for the for the locality[e.g. Iwate Prefecture]
This page provides mineralogical data about Iwateite.


Classification of IwateiteHide

Approved
Approval Year:
2013

Physical Properties of IwateiteHide

Colour:
Colrless
Streak:
White
Density:
4.06 g/cm3 (Calculated)

Chemical Properties of IwateiteHide

Formula:
Na2BaMn(PO4)2

Chemical AnalysisHide

Oxide wt%:
 1
P2O532.7 %
SiO20.2 %
MnO16.9 %
MgO0.1 %
CaO0.1 %
SrO1.3 %
BaO35.0 %
Na2O13.7 %
Total:100 %
Empirical formulas:
Sample IDEmpirical Formula
1BaNa2Mn[PO4]2
Sample references:
IDLocalityReference
1Woods Mine, Tamworth, Darling Co., New South Wales, AustraliaFrank Mazdab collection (epoxy mount FKM-30)

Crystallography of IwateiteHide

Crystal System:
Trigonal
Class (H-M):
3 - Rhombohedral
Space Group:
P3
Cell Parameters:
a = 5.3642(10) Å, c = 7.039(2) Å
Ratio:
a:c = 1 : 1.312
Unit Cell V:
175.41 ų
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.032(39)
4.646(67)
3.877(48)
2.807(100)
2.683(74)
2.506(46)
1.939(91)
1.571(33)

Type Occurrence of IwateiteHide

General Appearance of Type Material:
As granular to anhedral inclusions of 10-
100 μm in the main constituent minerals in manganese ore and sérandite crystal.
Place of Conservation of Type Material:
Type material is deposited in the collections of the National Museum of Nature and Science, Tsukuba, Japan, specimen number NSM-M43779
Geological Setting of Type Material:
Ba-and Sr-bearing manganese deposit.
Associated Minerals at Type Locality:

Synonyms of IwateiteHide

Other Language Names for IwateiteHide

Japanese:岩手石

Common AssociatesHide

Associated Minerals Based on Photo Data:
Serandite1 photo of Iwateite associated with Serandite on mindat.org.

Fluorescence of IwateiteHide

Non-fluorescent

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 IwateiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Nishio-Hamane, D., Minakawa, T. and Okada, H. (2013) Iwateite, IMA 2013-034. CNMNC Newsletter No. 17, October 2013, page 2998; Mineralogical Magazine, 77, 2997-3005.
Nishio-Hamane, D., Minakawa, T., Okada, H. (2014): Iwateite, BaNa2Mn(PO4)2, a new mineral from Tanohata mine, Iwate Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 109, 34-37.

Internet Links for IwateiteHide

Localities for IwateiteHide

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 (TL)
 
  • Honshu Island
    • Tohoku Region
      • Iwate Prefecture
        • Shimohei-gun
          • Tanohata-mura
            • Tanohata mine
Nishio-Hamane, D., Minakawa, T., Okada, H. (2014): Iwateite, BaNa2Mn(PO4)2, a new mineral from Tanohata mine, Iwate Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 109, 34-37.
Mineral and/or Locality  
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