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Manganilvaite

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Formula:
CaFe2+Fe3+Mn2+(Si2O7)O(OH)
System:
Monoclinic
Colour:
Black
Lustre:
Vitreous
Hardness:
5½ - 6
Member of:
Mn(II)-dominant analogue of Ilvaite.



Classification of Manganilvaite

Approved
Approval Year:
2002
9.BE.07

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination

Physical Properties of Manganilvaite

Vitreous
Diaphaneity (Transparency):
Opaque
Colour:
Black
Hardness (Mohs):
5½ - 6
Hardness (Vickers):
VHN100=868 kg/mm2
Tenacity:
Brittle
Cleavage:
Distinct/Good
Density:
3.92 g/cm3 (Measured)    

Optical Data of Manganilvaite

Type:
Anisotropic
Anisotropism:
strong
Reflectivity:
460nmR1=8.3%R2=10%
540nmR1=7.5%R2=9.8%
580nmR1=7%R2=9.7%
640nmR1=6.1%R2=9.5%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 10%.
R1 shown in black, R2 shown in red
Colour in reflected light:
grayish blue to pale reddish brown
Internal Reflections:
red
Pleochroism:
Visible
Comments:
bluish gray to grayish brown

Chemical Properties of Manganilvaite

Formula:
CaFe2+Fe3+Mn2+(Si2O7)O(OH)
Elements listed in formula:
Analytical Data:
Average results of 62 electron-microprobe analyses of material from Ossikovo
The MnO content varies from 9.02 to 14.96 wt.-%
MgO (0.48)
Al2O3 (0.20)
SiO2 (29.65)
CaO (12.62)
TiO2 (0.02)
MnO (11.99)
FeO (40.93)

sum 95.89 wt.%

Crystallography of Manganilvaite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 13.025 Å, b = 8.8514 Å, c = 5.8486 Å
β = 90.167°
Ratio:
a:b:c = 1.472 : 1 : 0.661
Unit Cell Volume:
V 674.28 ų
Z:
4
Morphology:
predominant forms: r{011}, m{110}, s{210} and o{111}
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.875(85)
2.848(90)
2.718(100)
2.687(70)
2.180(48)
2.111(47)
1.475(48)
Comments:
from type description

Type Occurrence of Manganilvaite

General Appearance of Type Material:
rarely well-shaped dipyramidal crystals, with a prismatic habit along c
Geological Setting of Type Material:
in marble-hosted distal skarn-type orebodies

Relationship of Manganilvaite to other Species

Member of:
Other Members of Group:
CortesognoiteCaV2(Si2O7)(OH)2·H2O
HennomartiniteSrMn23+(Si2O7)(OH)2 · H2O
IlvaiteCaFe3+Fe22+(Si2O7)O(OH)
ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
LawsoniteCaAl2(Si2O7)(OH)2 · H2O
NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
9.BE.02WadsleyiteMg2SiO4
9.BE.05HennomartiniteSrMn23+Si2O7(OH)2 · H2O
9.BE.05LawsoniteCaAl2Si2O7(OH)2 · H2O
9.BE.05NoelbensoniteBaMn23+Si2O7(OH)2 · H2O
9.BE.05ItoigawaiteSrAl2Si2O7(OH)2 · H2O
9.BE.07IlvaiteCaFe3+Fe22+O(Si2O7)(OH)
9.BE.10SuoluniteCa2Si2O5(OH)2 · H2O
9.BE.12JaffeiteCa6Si2O7(OH)6
9.BE.15FresnoiteBa2TiO(Si2O7)
9.BE.17BaghdaditeCa3Zr(Si2O7)O2
9.BE.17BurpaliteNa2CaZr(Si2O7)F2
9.BE.17CuspidineCa4(Si2O7)F2
9.BE.17Hiortdahlite(Na,Ca)2Ca4Zr(Mn,Ti,Fe)(Si2O7)2(F,O)4
9.BE.17Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
9.BE.17Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti,Nb)(Si2O7)(O,OH,F)2
9.BE.17NiocaliteCa7Nb(Si2O7)2O3F
9.BE.17NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF
9.BE.17WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,F)2
9.BE.17Hiortdahlite INa4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5
9.BE.17MarianoiteNa2Ca4(Nb,Zr)2(Si2O7)2(O,F)4
9.BE.20Mosandrite-(Ce)(Ca3Ce)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2
9.BE.20Nacareniobsite-(Ce)(Ca3Ce)Na3Nb(Si2O7)2(OF)F2
9.BE.22GötzeniteCa4NaCa2Ti(Si2O7)2(OF)F2
9.BE.22Hainite-(Y)(Ca3Y)Na(NaCa)Ti(Si2O7)2(OF)F2
9.BE.22RosenbuschiteCa6Zr2Na6ZrTi(Si2O7)4(OF)2F4
9.BE.22KochiteCa2MnZrNa3Ti(Si2O7)2(OF)F2
9.BE.23DovyreniteCa6Zr(Si2O7)2(OH)4
9.BE.25Barytolamprophyllite(BaK)Ti2Na3Ti(Si2O7)2O2(OH)2
9.BE.25EricssoniteBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25Lamprophyllite(SrNa)Ti2Na3Ti(Si2O7)2O2(OH)2
9.BE.25Ericssonite-2OBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25SeidozeriteNa2Zr2Na2MnTi(Si2O7)2O2F2
9.BE.25Nabalamprophyllite(BaNa)Ti2Na3Ti(Si2O7)2O2(OH)2
9.BE.25GrenmariteNa2Zr2Na2MnZr(Si2O7)2O2F2
9.BE.25SchülleriteBa2Ti2Na2Mg2(Si2O7)2O2F2
9.BE.25LileyiteBa2Ti2Na2Fe2+Mg(Si2O7)2O2F2
9.BE.27MurmaniteNa2Ti2Na2Ti2(Si2O7)2O4(H2O)4
9.BE.30Epistolite(Na◻)Nb2Na3Ti(Si2O7)2O2(OH)2(H2O)4
9.BE.32LomonosoviteNa6Na2Ti2Na2Ti2(Si2O7)2(PO4)2O4
9.BE.35VuonnemiteNa6Na2Nb2Na3Ti(Si2O7)2(PO4)2O2(OF)
9.BE.37SoboleviteNa6(Na2Ca)(NaCaMn)Na2Ti2Na2(TiMn)(Si2O7)2(PO4)4O2(OF)F2
9.BE.40InneliteBa4Ti2Na(NaCa)Ti(Si2O7)2[(SO4)(PO4)]O2[O(OH)]
9.BE.40PhosphoinneliteNa3Ba4Ti3Si4O14(PO4)2O2F
9.BE.42YoshimuraiteBa4Mn42+Ti2(Si2O7)2(PO4)2O2(OH)2
9.BE.45QuadruphiteNa6Na2(CaNa)2Na2Ti2Na2Ti2(Si2O7)2(PO4)4O4F2
9.BE.47PolyphiteNa6(Na4Ca2)2Na2Ti2Na2Ti2(Si2O7)2(PO4)6O4F4
9.BE.50BornemaniteNa6(Na◻)Ba2Ti2Nb2(Si2O7)4(PO4)2O4(OH)2F2
9.BE.50ShkatulkaliteNa10MnTi3Nb3(Si2O7)6(OH)2F · 12H2O
9.BE.55BafertisiteBa2Fe42+Ti2(Si2O7)2O2(OH)2F2
9.BE.55HejtmaniteBa2Mn42+Ti2(Si2O7)2O2(OH)2F2
9.BE.55Bykovaite(Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2O2Si4O14(H2O,F,OH)2 · 3.5H2O
9.BE.55Nechelyustovite(Na◻)◻2Ba4Ti4Nb4(Na11◻)Ti4(Si2O7)8O8(OH)8(H2O)12
9.BE.60DelindeiteBa2Ti2(Na2◻)Ti(Si2O7)2(OH)2(H2O)2O2
9.BE.65BusseniteBa4(Na,◻)2(Fe2+,Na)2Ti2(Si2O7)2(CO3)2O2(OH)2(H2O)2F2
9.BE.67JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
9.BE.67PerraultiteNaBaMn4Ti2(Si2O7)2O2(OH)2F
9.BE.67SurkhobiteKBa3Ca2Na2Mn16Ti8(Si2O7)8O8(OH)4(F,O,OH)8
9.BE.70Karnasurtite-(Ce)CeTiAlSi2O7(OH)4 · 3H2O
9.BE.70Perrierite-(Ce)Ce4MgFe23+Ti24+O8(Si2O7)2
9.BE.70Strontiochevkinite(Sr,Ce,La)4Fe2+(Ti,Zr)4O8(Si2O7)2
9.BE.70Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
9.BE.70Polyakovite-(Ce)(Ce,Ca)4MgCr2(Ti,Nb)2Si4O22
9.BE.70RengeiteSr4Ti4ZrO8(Si2O7)2
9.BE.70MatsubaraiteSr4Ti5O8(Si2O7)2
9.BE.70Dingdaohengite-(Ce)(Ce3+,La)4Fe2+(Ti,Fe2+,Mg,Fe3+)2Ti2Si4O22
9.BE.70Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4Si4O22
9.BE.70Perrierite-(La)(La,Ce,Ca)4(Fe2+,Mn)(Ti,Fe3+,Al)4(Si2O7)2O8
9.BE.70UKI-2008-(SiO:SrTiZr)Sr4ZrTi4(Si2O7)2O8
9.BE.70Hezuolinite(Sr,REE)4Zr(Ti,Fe3+,Fe2+)2Ti2O8(Si2O7)2
9.BE.72FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
9.BE.75BelkoviteBa3Nb6(Si2O7)2O12
9.BE.77NasoniteCa4Pb6(Si2O7)3Cl2
9.BE.80KentrolitePb2Mn23+O2(Si2O7)
9.BE.80MelanotekitePb2Fe23+O2Si2O7
9.BE.82TilleyiteCa5Si2O7(CO3)2
9.BE.85KillalaiteCa3.2[H0.6Si2O7](OH)
9.BE.87Stavelotite-(La)La3Mn32+Cu2+(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30
9.BE.90Biraite-(Ce)Ce2Fe2+Si2O7(CO3)
9.BE.92Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Ti,Fe2+,Al)3O2(Si2O7)1-x+y(AsO3)1+x-y(OH)3x-3y, x=0.5, y=0.3
9.BE.95BatisiviteBaTi6(V,Cr)8Si2O29

Other Names for Manganilvaite

Name in Other Languages:
Simplified Chinese:锰黑柱石
Traditional Chinese:錳黑柱石

Other Information

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 Manganilvaite

Reference List:
Bonev, I.K., Vassileva, R.D., Zotov, N., Kouzmanov, K. (2005), "Manganilvaite, CaFe2+Fe3+(Mn,Fe2+)(Si2O7)O(OH), a new mineral species of the ilvaite group, from Pb–Zn skarn deposits in the Rhodope Mountains, Bulgaria", Canadian Mineralogist: 43: 1027-1042.

Zotov, N., Kockelmann, W., Jacobsen, S.D., Mitov, I., Paneva, D., Vassileva, R.D., Bonev, I.K. (2005): "Structure and cation order in manganilvaite: a combined X-ray diffraction, neutron diffraction and Mössbauer study", Canadian Mineralogist: 43: 1043-1053.

Internet Links for Manganilvaite

mindat.org URL:
https://www.mindat.org/min-26363.html
Please feel free to link to this page.

Localities for Manganilvaite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Bulgaria
 
  • Plovdiv Oblast
    • Rhodope Mts
      • Laki Obshtina
        • Laki (Luki)
I. K. Bonev et al.: Canadian Mineralogist 43:1027-1042 (2005)
  • Smolyan Oblast
    • Rhodope Mts
      • Madan ore field
        • Septemvri mine (Deveti Septemvri mine)
I. K. Bonev et al.: Canadian Mineralogist 43:1027-1042 (2005)
I. K. Bonev et al.: Canadian Mineralogist 43:1027-1042 (2005)
China
 
  • Hubei Province
    • Huangshi Prefecture
Jordi Fabre analytical data
Norway
 
  • Buskerud
    • Drammen
      • Konnerud
        • Konnerudkollen Mines (Konnerud Mines)
Larsen, A. O. & Dahlgren, S (2002): Ilvaite from the Oslograben, Norway. Neues Jahrbuch für Mineralogie Monatshefte, 169-181
Mineral and/or Locality  
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