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Mangani-obertiite

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Formula:
Na(Na2)(Mg3Mn3+Ti)(Si8O22)O2
Mangani-obertiite is a obertiite root name amphibole in the WO2- dominant amphibole group with Mg as the dominant element in the C2+ position and Mn3+ as the dominant element in the C3+ position.
Colour:
Pale pink
Lustre:
Vitreous
Hardness:
5
Specific Gravity:
3.16 (Calculated)
Crystal System:
Monoclinic
Name:
The obertiite root name is for Prof. Roberta Oberti, University of Pavia, Italy, for her contributions to the crystal chemistry of amphiboles.

This mineral was originally named obertiite (IMA 1998-046). It was re-named ferri-obertiite in 2012 to align the use of pre-fixes in the obertiite root name minerals with the general amphibole nomenclature rules. Re-investigation of the holotype material in 2014 revealed that Mn3+ > Fe3+, hence the mineral was renamed to mangani-obertiite
This page provides mineralogical data about Mangani-obertiite.


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Classification of Mangani-obertiiteHide

Approved
Approval Year:
1998
9.DE.25

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles

Physical Properties of Mangani-obertiiteHide

Vitreous
Colour:
Pale pink
Streak:
Colorless
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
{110}
Fracture:
Conchoidal
Density:
3.16 g/cm3 (Calculated)

Optical Data of Mangani-obertiiteHide

Type:
Biaxial (-)
RI values:
nα = 1.643 nβ = 1.657 nγ = 1.670
2V:
Measured: 81° , Calculated: 93°
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
None visible
Pleochroism:
Weak
Comments:
pink
red-orange

Chemical Properties of Mangani-obertiiteHide

Formula:
Na(Na2)(Mg3Mn3+Ti)(Si8O22)O2

Mangani-obertiite is a obertiite root name amphibole in the WO2- dominant amphibole group with Mg as the dominant element in the C2+ position and Mn3+ as the dominant element in the C3+ position.
IMA Formula:
NaNa2(Mg3Mn3+Ti4+)Si8O22O2

Crystallography of Mangani-obertiiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 9.776 Å, b = 17.919 Å, c = 5.292 Å
β = 104.05°
Ratio:
a:b:c = 0.546 : 1 : 0.295
Unit Cell V:
899.3 ų
Z:
2
Morphology:
Elongated blades and divergent masses

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.414(
2.705(
3.390(
4.467(
3.117(
2.531(
3.255(
2.577(
2.163(
4.013(

Type Occurrence of Mangani-obertiiteHide

General Appearance of Type Material:
acicular crystals
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Canada
Geological Setting of Type Material:
Cavities in basaltic flows

Synonyms of Mangani-obertiiteHide

Other Language Names for Mangani-obertiiteHide

Relationship of Mangani-obertiite to other SpeciesHide

Other Members of this group:
Ferri-obertiiteNa(Na2)(Mg3Fe3+Ti)(Si8O22)O2Mon. 2/m : B2/m
Ferro-ferri-obertiiteNaNa2(Fe2+3Fe3+Ti)Si8O22O2Mon. 2/m : B2/m
Unnamed (possible K-analogue of Ferri-obertiite)KNa2[(Mg,Fe,Na)3Fe3+(Ti,Fe)]Si8O22(O,F)2

Related Minerals - Nickel-Strunz GroupingHide

9.DE.05Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
9.DE.05Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2Mon.
9.DE.05Clino-holmquistite Root Name☐{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2Mon.
9.DE.05Grunerite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Manganocummingtonite☐{Mn2+2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Manganogrunerite☐{Mn2+2}{Fe2+5}(Si8O22)(OH)2Mon.
9.DE.05Permanganogrunerite☐{Mn2+2}{Mn2+5}(Si8O22)(OH)2Mon.
9.DE.05Ferro-fluoro-pedrizite{Na}{Li2}{Fe2Al2Li}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.05Ferri-fluoro-leakeite{Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Ferri-tschermakite☐{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
9.DE.10Ferro-actinolite☐{Ca2}{Fe2+5}(Si8O22)(OH)2Mon.
9.DE.10Ferro-hornblende☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2Mon.
9.DE.10Ferro-tschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10Joesmithite{Pb}{Ca2}{Mg3Fe3+2}(Be2Si6O22)(OH)2Mon.
9.DE.10Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2Mon.
9.DE.10Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10CannilloiteCa(Ca2)(Mg4Al)(Al3Si5O22)(OH)2Mon.
9.DE.10Fluoro-cannilloite{Ca}{Ca2}{Mg4Al}(Al3Si5O22)(F,OH)2Mon.
9.DE.10Parvo-manganotremolite☐{CaMn2+}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Potassic-fluoro-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.15Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2Mon.
9.DE.15Ferro-edenite{Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2Mon.
9.DE.15Ferro-kaersutite{Na}{Ca2}{Fe2+3AlTi}(Al2Si6O22)O2Mon.
9.DE.15Ferro-pargasite{Na}{Ca2}{Fe2+4Al}(Al2Si6O22)(OH)2Mon.
9.DE.15Hastingsite{Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2Mon.
9.DE.15Kaersutite{Na}{Ca2}{Mg3AlTi}(Al2Si6O22)O2 Mon.
9.DE.15Magnesio-hastingsite{Na}{Ca2}{Mg4Fe3+}(Al2Si6O22)(OH)2Mon.
9.DE.15Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2Mon.
9.DE.15Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2Mon.
9.DE.15Fluoro-edenite{Na}{Ca2}{Mg5}(AlSi7O22)(F,OH)2Mon. 2/m : P2/m
9.DE.15Potassic-ferro-ferri-sadanagaite{K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-sadanagaite{K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2Mon.
9.DE.15Potassic-ferro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Magnesio-fluoro-hastingsite{Na}{Ca2}{Mg4Fe3+}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.15Potassic-fluoro-hastingsite{K}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(F,OH)2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-hastingsite{K}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(Cl,OH)2Mon. 2/m : B2/m
9.DE.15Fluoro-pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(F,OH)2Mon. 2/m : B2/m
9.DE.15Parvo-mangano-edenite{Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)(Cl,OH)2
9.DE.15Potassic-ferro-chloro-edenite{K}{Ca2}{Fe2+5}(AlSi7O22)(Cl,OH)2
9.DE.15Potassic-magnesio-hastingsite{K}{Ca2}{Mg4Fe3+}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-ferro-pargasite{K}{Ca2}{Fe2+4Al}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.15Chromio-pargasite{Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Barroisite☐{CaNa}{Mg3Al2}(AlSi7O22)(OH)2Mon.
9.DE.20Ferro-ferri-barroisite☐(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-winchite☐[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
9.DE.20Ferri-barroisite☐(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2
9.DE.20Ferro-ferri-katophoriteNa(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-barroisite☐{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-richterite{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2Mon.
9.DE.20Ferro-winchite ☐{CaNa}{Fe2+4Al}(Si8O22)(OH)2Mon.
9.DE.20Ferro-katophorite{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
9.DE.20Ferri-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2Mon.
9.DE.20Magnesiotaramite{Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2Mon.
9.DE.20Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2Mon.
9.DE.20Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2Mon.
9.DE.20Taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon. 2/m
9.DE.20Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
9.DE.20Potassic-fluoro-richterite{K}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon.
9.DE.20Potassic-richteriteK[CaNa][Mg5]Si8O22(OH)2Mon.
9.DE.20Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2Mon. 2/m
9.DE.20Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.25Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25EckermanniteNaNa2(Mg4Al}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-eckermanniteNaNa2(Fe2+4Al)Si8O22(OH)2Mon.
9.DE.25Ferro-glaucophane◻[Na2][Fe2+3Al2]Si8O22(OH)2Mon.
9.DE.25Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2Mon.
9.DE.25Potassic-mangani-leakeite[(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2Mon.
9.DE.25Mangano-ferri-eckermannite[Na][Na2][Mn2+4(Fe3+)]Si8O22(OH)2Mon.
9.DE.25Ferri-leakeite[Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Magnesio-riebeckite◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25NybøiteNaNa2(Mg3Al2)(AlSi7O22)(OH)2Mon.
9.DE.25Riebeckite◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangano-mangani-ungarettiiteNaNa2(Mn2+2Mn3+3)(Si8O22)O2Mon.
9.DE.25Ferro-ferri-nybøiteNaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Clino-ferro-ferri-holmquistite◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferri-nybøiteNaNa2(Mg3Fe3+2](AlSi7O22)(OH)2Mon.
9.DE.25Ferro-ferri-leakeite[Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Ferro-ferri-fluoro-leakeiteNa(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2Mon.
9.DE.25Sodic-ferri-clinoferroholmquistiteNa0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2Mon.
9.DE.25Ferri-pedrizite[Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Potassic-ferri-leakeite[K][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Fluoro-nybøiteNaNa2(Mg3Al2)(AlSi7O22)(F,OH)2Mon. 2/m : B2/m
9.DE.25Mangani-dellaventuraite{Na}{Na2}{MgMn3+2LiTi4+}Si8O22O2Mon. 2/m : B2/m
9.DE.25Fluoro-pedriziteNaLi2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Potassic-arfvedsonite[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Potassic-magnesio-fluoro-arfvedsonite[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]
9.DE.25Ferro-ferri-pedrizite[Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25PedriziteNaLi2(LiMg2Al2)(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-pedriziteNaLi2(Fe2+2Al2Li)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Fluoro-leakeiteNaNa2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Ferro-ferri-obertiiteNaNa2(Fe2+3Fe3+Ti)Si8O22O2Mon. 2/m : B2/m

Fluorescence of Mangani-obertiiteHide

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 Mangani-obertiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Oberti, R., Ungaretti, L., Cannillo, E., Hawthrone, F. (1992) The behavior of Ti in Amphiboles: I. Four- and six-coordinated Ti in Richterite, European Journal of Mineralogy: 4: 425-439.
Hawthorne, F. C., Cooper, M.A. Grice, J.D., Ottolini, L. (2000) A new anhydrous amphibole from the Eifel region, Germany: Description and crystal structure of obertiite, NaNa2(Mg3,Fe,Ti)Si8O28O2. American Mineralogist: 85: 236-241.
Oberti, R., Cannillo, E., Toscani, G. (2012) How to name amphiboles after the IMA2012 report: rules of thumb and a new PC program for monoclinic amphiboles. Periodico di Mineralogia: 81: 257-267.
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 Mangani-obertiiteHide

Localities for Mangani-obertiiteHide

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.
Germany
 
  • Rhineland-Palatinate
    • Eifel
      • Andernach
        • Nickenich
Blass, G., Graf , HW., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 1/2001
Hand Egon Künzel, Günter Blaß, Willi Schüller (2011) Mineralien - Bomben - Grottensteine: Der Nickenicher Weinberg. Lapis, 36, #7-8, 55-66
      • Daun
        • Üdersdorf
Blass, G.; Graf, H.W., Neue Mineralienfunde aus der Vulkaneifel, Mineralien-Welt 1/2001 New minerals approved by IMA CNMNC in August-September 2014
      • Mayen
        • Ettringen
          • Bellerberg volcano
Hawthorne, F. C., Cooper, M.A., Grice, J.D., Ottolini, l. (2000): A new anhydrous amphibole from the Eifel region, Germany: Description and crystal structure of obertiite, Na Na2(Mg3,Fe,Ti)Si8O28O2, American Mineralogist 85, 236-241
      • Niederzissen
        • Burgbrohl
Blass, G., Graf, H.W., Kolitsch, U., Neue Funde aus der Vulkaneifel - ein Rückblick auf die Sammelsaison 2002, Mineralien-Welt 13/5, 2003
      • Polch
        • Ochtendung
Blass, G., Graf, HW., Kolitsch, U., Sebold, D., Über neue Mineralfunde aus der Vulkaneifel, MW 6/2005 New minerals approved by IMA CNMNC in August-September 2014
Mineral and/or Locality  
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