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Amamoorite

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Formula:
CaMn2+2Mn3+(Si2O7)O(OH)
Crystal System:
Monoclinic
Member of:
The Mn2+-Mn3+-dominant analogue of ilvaite.


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Classification of AmamooriteHide

Approved, Pending publication
Approval Year:
2018

Chemical Properties of AmamooriteHide

Formula:
CaMn2+2Mn3+(Si2O7)O(OH)
IMA Formula:
CaMn2+2Mn3+(Si2O7)O(OH)

Crystallography of AmamooriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 13.0981(2) Å, b = 8.8897(2) Å, c = 5.9029(1) Å
β = 91.697(2)°
Ratio:
a:b:c = 1.473 : 1 : 0.664
Unit Cell V:
687.02 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.349(76)
2.893(100)
2.827(48)
2.754(50)
2.725(50)
2.699(66)
2.157(33)
2.100(35)

Type Occurrence of AmamooriteHide

Place of Conservation of Type Material:
Collections of the Western Australian Museum, catalogue number WAM M8.2018, and the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue number 66937

Synonyms of AmamooriteHide

Relationship of Amamoorite to other SpeciesHide

Member of:
Other Members of this group:
CortesognoiteCaV2(Si2O7)(OH)2·H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
HennomartiniteSrMn3+2(Si2O7)(OH)2 · H2OOrth.
IlvaiteCaFe3+Fe2+2(Si2O7)O(OH)Orth. mmm (2/m 2/m 2/m)
ItoigawaiteSrAl2(Si2O7)(OH)2 · H2OOrth.
LawsoniteCaAl2(Si2O7)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm
ManganilvaiteCaFe2+Fe3+Mn2+(Si2O7)O(OH)Mon. 2/m : P21/b
NoelbensoniteBaMn3+2(Si2O7)(OH)2 · H2OOrth.

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 AmamooriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Townend, R., Grey, I.E., Mumme, W.G., Kampf, A.R., Roberts, M., Gable, R.W. and Dale, R. (2018) Amamoorite, IMA 2018-105. CNMNC Newsletter No. 46, December 2018, page xxxx; Mineralogical Magazine, 82, xxxx–xxxx.

Internet Links for AmamooriteHide

Localities for AmamooriteHide

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.
Australia (TL)
 
  • Queensland
    • Gympie Region
      • Amamoor Creek
Townend, R., Grey, I.E., Mumme, W.G., Kampf, A.R., Roberts, M., Gable, R.W. and Dale, R. (2018) Amamoorite, IMA 2018-105. CNMNC Newsletter No. 46, December 2018, page xxxx; Mineralogical Magazine, 82, xxxx–xxxx.
Mineral and/or Locality  
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