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Abswurmbachite

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Formula:
CuMn3+6(SiO4)O8
Colour:
black
Lustre:
Metallic
Hardness:
Specific Gravity:
4.96 (Calculated)
Crystal System:
Tetragonal
Member of:
Name:
Named after Dr. Irmgard Abs-Wurmbach (1938-), Institut für Mineralogie, Ruhr Universität, Bochum, Germany.
In a series with braunite. The third approved Cu-Mn silicate mineral, as such somewhat similar to dixenite and stavelotite-(La).


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Classification of AbswurmbachiteHide

Approved
Approval Year:
1990
9.AG.05

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination
7.5.1.4

7 : MULTIPLE OXIDES
5 : (AB)2X3
14.18.6

14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe

Physical Properties of AbswurmbachiteHide

Metallic
Transparency:
Opaque
Colour:
black
Comment:
grey in reflected light.
Streak:
brownish black
Hardness:
6½ on Mohs scale
Cleavage:
None Observed
Density:
4.96 g/cm3 (Calculated)

Chemical Properties of AbswurmbachiteHide

Formula:
CuMn3+6(SiO4)O8
IMA Formula:
Cu2+Mn3+6O8(SiO4)
Common Impurities:
Fe,(Al,Ti,Cu,Mg,Ca)

Crystallography of AbswurmbachiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/acd
Cell Parameters:
a = 9.406 Å, c = 18.546 Å
Ratio:
a:c = 1 : 1.972
Unit Cell V:
1640.82 ų
Z:
8

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.475 (10)
2.702 (100)
2.350 (15)
1.663 (10)
1.416 (10)
1.402 (10)
Comments:
Synthetic compound lines: 1.651 instead of 1.663 (30); additional: 2.13 (15), 1.459 (14); not present or intensity-low: 3.475, 1.416

Type Occurrence of AbswurmbachiteHide

General Appearance of Type Material:
Anhedral grains to 50 microns.
Place of Conservation of Type Material:
Institute for Mineralogy, Ruhr University, Bochum, Germany; National Museum of Natural History, Washington, DC, USA
Geological Setting of Type Material:
In very low-grade, high pressure metamorphic quartzites
Associated Minerals at Type Locality:
Reference:
Reinecke T, Tillmanns E, Bernhardt H J (1991) Abswurmbachite, Cu2+Mn3+6[O8/SiO4], a new mineral of the braunite group: natural occurrence, synthesis, and crystal structure. Neues Jahrbuch für Mineralogie, Abhandlungen 163, 117-143

Synonyms of AbswurmbachiteHide

Other Language Names for AbswurmbachiteHide

Relationship of Abswurmbachite to other SpeciesHide

Member of:
Other Members of this group:
BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
GatedaliteZrMn2+2Mn3+4SiO12Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd

Common AssociatesHide

ArdenniteName for members with unspecified As:V ratios.
ClinochloreMg5Al(AlSi3O10)(OH)8
HollanditeBa(Mn4+6Mn3+2)O16
Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
QuartzSiO2
RutileTiO2
ShattuckiteCu5(Si2O6)2(OH)2
SursassiteMn2+2Al3(SiO4)(Si2O7)(OH)3
TenoriteCuO

Related Minerals - Nickel-Strunz GroupingHide

9.AG.05BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.05Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
9.AG.10LångbaniteMn2+4Mn3+9Sb5+O16(SiO4)2Trig. 3m : P3m1
9.AG.15MalayaiteCaSn(SiO4)OMon.
9.AG.15TitaniteCaTi(SiO4)OMon. 2/m : P21/b
9.AG.15VanadomalayaiteCaV4+(SiO4)OMon.
9.AG.15Natrotitanite(Na0.5Y0.5)Ti(SiO4)OMon. 2/m : B2/b
9.AG.15ŻabińskiiteCa[Al0.5(Ta,Nb)0.5)](SiO4)OTric. 1
9.AG.20Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Cerite-(La)(La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.20Aluminocerite-(Ce)(Ce,La,Ca)9(Al,Fe3+)(SiO4)3(HSiO4)4(OH)3Trig. 3m : R3c
9.AG.25Trimounsite-(Y)Y2Ti2(SiO4)O5Mon.
9.AG.25Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
9.AG.25Mieite-(Y)Y4Ti(SiO4)2O[F,(OH)]6Orth. mmm (2/m 2/m 2/m) : Cmcm
9.AG.30SitinakiteKNa2Ti4(SiO4)2O5(OH) · 4H2OTet.
9.AG.35KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
9.AG.40aNatisiteNa2Ti(SiO4)OTet.
9.AG.40bParanatisiteNa2Ti(SiO4)OOrth.
9.AG.45Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
9.AG.45Törnebohmite-(La)(La,Ce)2Al(SiO4)2(OH)
9.AG.50Kuliokite-(Y)Y4Al(SiO4)2(OH)2F5
9.AG.55ChantaliteCaAl2(SiO4)(OH)4Tet. 4/m : I41/a
9.AG.60MozartiteCaMn3+(SiO4)(OH)Orth. 2 2 2 : P21 21 21
9.AG.60VuagnatiteCaAl(SiO4)(OH)Orth.
9.AG.65HatruriteCa3(SiO4)OTrig.
9.AG.70JasmunditeCa11(SiO4)4O2STet. 4 2m : I4m2
9.AG.75AfwilliteCa3(HSiO4)2 · 2H2OMon. m : Bb
9.AG.80BultfonteiniteCa2(HSiO4)F · H2OTric.
9.AG.85ZoltaiiteBaV4+2V3+12(SiO4)2O19Trig. 3 : P3
9.AG.90Tranquillityite(Fe2+,Ca)8(Zr,Y)2Ti3(SiO4)3O12Hex.

Related Minerals - Dana Grouping (8th Ed.)Hide

7.5.1.2NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.5.1.3BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.5.1.3Braunite-IICaMn3+14(SiO4)O20Tet. 4/mmm (4/m 2/m 2/m) : I41/acd

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.18.1Nambulite(Li,Na)Mn4Si5O14(OH)Tric.
14.18.2Natronambulite(Na,Li)(Mn,Ca)4Si5O14OHTric.
14.18.3ZakharoviteNa4Mn5Si10O24(OH)6 · 6H2OTrig.
14.18.4NorrishiteKLiMn3+2(Si4O10)O2Mon. 2/m : B2/m
14.18.5Shafranovskite(Na,K)6(Mn,Fe)3Si9O24 · 6H2OTrig.
14.18.7Donpeacorite(Mn2+,Mg)Mg[SiO3]2Orth.
14.18.8KanoiteMn2+(Mg,Mn2+)Si2O6Mon. 2/m : P21/b
14.18.9CaryopiliteMn2+3Si2O5(OH)4Mon.
14.18.10Gonyerite(Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8
14.18.11Tirodite
14.18.12Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2Orth.
14.18.13BustamiteCaMn2+(Si2O6)Tric. 1 : P1
14.18.14GlaucochroiteCaMn2+SiO4Orth.
14.18.15Truscottite(Ca,Mn)14Si24O58(OH)8 · 2H2OTrig.
14.18.16SantaclaraiteCaMn4[Si5O14OH](OH) · H2OTric.
14.18.17FerrobustamiteCaFe2+(Si2O6)Tric.
14.18.18JohannseniteCaMn2+Si2O6Mon. 2/m : B2/b
14.18.19NeltneriteCaMn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
14.18.20OrlymaniteCa4Mn3Si8O20(OH)6 · 2H2OHex.
14.18.21InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2OTric. 1 : P1
14.18.22OrientiteCa8Mn3+10(SiO4)3(Si3O10)3(OH)10 · 4H2O Orth.
14.18.23RuiziteCa2Mn3+2[Si4O11(OH)2](OH)2·2H2OMon. 2
14.18.24BostwickiteCaMn6Si3O16 · 7H2OOrth.
14.18.25KittatinnyiteCa2Mn2Mn(SiO4)2(OH)4 · 9H2OHex.
14.18.26LithiomarsturiteLiCa2Mn2Si5O14(OH)Tric.
14.18.27SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
14.18.28KvanefjelditeNa4(Ca,Mn)(Si3O7)2(OH)2Orth.
14.18.29MarsturiteNaCaMn3Si5O14(OH)Tric. 1 : P1
14.18.30RaiteNa4Mn2+3Ti0.25Si8O20(OH)2 · 10H2OOrth. 2 2 2 : C2 2 2
14.18.31Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
14.18.32Byelorussite-(Ce)NaBa2Ce2MnTi2[Si4O12]2O2(F,OH) · H2O
14.18.33Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5Mon.
14.18.34Calderite(Mn2+,Ca)3(Fe3+,Al)2(SiO4)3Iso.
14.18.35PyroxmangiteMnSiO3Tric. 1
14.18.36Dannemorite☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2
14.18.37Neotocite(Mn,Fe,Mg)SiO3 · H2OAmor.
14.18.38BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)Tric. 1 : P1
14.18.39ManganbabingtoniteCa2(Mn,Fe)FeSi5O14(OH)Tric.
14.18.40ÖrebroiteMn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3Hex.

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 AbswurmbachiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Reinecke, T., Tillmanns, E., Bernhardt, H.J. (1991) Abswurmbachite, Cu2+Mn3+6[O8/SiO4], a new mineral of the braunite group: natural occurrence, synthesis, and crystal structure. Neues Jahrbuch für Mineralogie, Abhandlungen: 163: 117-143.
Jambor, J.L. (1992) New mineral names. American Mineralogist: 77: 670-675. http://rruff.info/rruff_1.0/uploads/AM77_670.pdf
New Mins. (1997) New Minerals 1990-1994.
Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)

Internet Links for AbswurmbachiteHide

Localities for AbswurmbachiteHide

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.
Greece (TL)
 
  • Aegean Islands Department (Aiyaíon)
    • Kykládes Prefecture
      • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
        • Andros Island
          • Vasilikon Mt
Neues Jahrb.Min.,Abh.(1991) 163, 117-143
  • Sterea Hellas Department
    • Évvoia Prefecture
      • Évvia Island (Euboea; Évvoia)
[Neues Jahrb.Min.,Abh.(1991) 163, 117-143]
Japan
 
  • Shikoku Island
    • Ehime prefecture
      • Shikokuchuo City
The Mineral Species of Japan (5th ed) Matsubara
mylonite.eps.nagoya-u.ac.jp/~enami/abstract/ganko0001.html; Enami, M., & Banno, Y. (2001). Partitioning of Sr between coexisting minerals of the hollandite-and piemontite-groups in a quartz-rich schist from the Sanbagawa metamorphic belt, Japan. American Mineralogist, 86(3), 205-214.
Mineral and/or Locality  
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