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Ferrorhodonite

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About FerrorhodoniteHide

Formula:
CaMn3Fe(Si5O15)
Colour:
Brown-red, pinkish-brown
Lustre:
Vitreous
Hardness:
6
Specific Gravity:
3.71
Crystal System:
Triclinic
Member of:
Name:
Named after its relation to rhodonite.
The Fe-substituted equivalent of rhodonite.


Classification of FerrorhodoniteHide

Approved
Approval Year:
2016
First Published:
2017

Physical Properties of FerrorhodoniteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Brown-red, pinkish-brown
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
Perfect
perfect on (201), good on (021) and (210) (according to optical data; indexed by analogy with rhodonite)
Parting:
perfect on (111), i.e. along the twinning plane
Fracture:
Step-Like
Density:
3.71(2) g/cm3 (Measured)    3.701 g/cm3 (Calculated)

Optical Data of FerrorhodoniteHide

Type:
Biaxial (+)
RI values:
nα = 1.731 nβ = 1.736 nγ = 1.745
2V:
Measured: 80° , Calculated: 74°
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v, distinct
Pleochroism:
Non-pleochroic
Comments:
The mineral is colourless under the microscope

Chemical Properties of FerrorhodoniteHide

Formula:
CaMn3Fe(Si5O15)

Crystallography of FerrorhodoniteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 6.6766 Å, b = 7.6754 Å, c = 11.8032 Å
α = 105.501°, β = 92.275°, γ = 93.919°
Ratio:
a:b:c = 0.87 : 1 : 1.538
Unit Cell V:
580.44 ų
Z:
2
Morphology:
Well-shaped crystals were not observed, single-crystal grains are thick tabular to
short prismatic, with rounded edges
Twinning:
Microtwinning is observed under the microscope; by analogy with rhodonite it is considered as a twinning on (111)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.770 (100)
2.929 (80)
2.968 (55)
3.132 (37)
2.173 (30)
2.595 (25)
2.652 (24)
2.518 (23)
4.765 (21)

Type Occurrence of FerrorhodoniteHide

General Appearance of Type Material:
Ferrorhodonite forms granular aggregates composed by thick tabular to short prismatic crystals, with rounded edges,up to 2 cm across
Place of Conservation of Type Material:
The type specimens (fragments of the holotype) are deposited in the collection of type specimens (Typmineralsammlung), Mineralogisches Museum Hamburg, catalogue number MMHH-004704, and in the collections of the Fersman Mineralogical Museum of the Russia
Empirical Formula of Type Material:
M5(Ca0.81Mn0.19) M1?3(Mn2.52Fe0.48) M4(Fe2+0.81Mn0.12Mg0.04Zn0.03) [Si5O15]
Associated Minerals at Type Locality:
Reference:
Shchipalkina, N.V., Chukanov, N.V., Pekov, I.V., Aksenov, S.M., McCammon, C., Belakovskiy, D.I., Britvin, S.N., Koshlyakova, N.N., Schäfer, C., Scholz, R., Rastsvetaeva, R.K. (2017): Ferrorhodonite, CaMn3Fe[Si5O15], a new mineral species from Broken Hill, New South Wales, Australia. Physics and Chemistry of Minerals: 44: 323–334.

Synonyms of FerrorhodoniteHide

Relationship of Ferrorhodonite to other SpeciesHide

Member of:
Other Members of this group:
BabingtoniteCa2(Fe,Mn)FeSi5O14(OH)Tric. 1 : P1
LithiomarsturiteLiCa2Mn2Si5O14(OH)Tric.
ManganbabingtoniteCa2(Mn,Fe)FeSi5O14(OH)Tric.
MarsturiteNaCaMn3Si5O14(OH)Tric. 1 : P1
NambuliteLiMn2+4Si5O14(OH)Tric.
Natronambulite(Na,Li)(Mn,Ca)4Si5O14OHTric.
RhodoniteMn2+SiO3Tric. 1
ScandiobabingtoniteCa2(Fe2+,Mn)ScSi5O14(OH)Tric.

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 FerrorhodoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Shchipalkina, N.V., Chukanov, N. V., Aksenov, S.M., McCammon, C., Pekov, I.V., Belakovskiy, D.I., Britvin, S.N., Koshlyakova, N.N., Schäfer, C., Scholz, R. and Rastsvetaeva, R.K. (2016) Ferrorhodonite, IMA 2016-016. CNMNC Newsletter No. 32, August 2016, page 916; Mineralogical Magazine: 80: 915–922.
Shchipalkina, N.V., Chukanov, N.V., Pekov, I.V., Aksenov, S.M., McCammon, C., Belakovskiy, D.I., Britvin, S.N., Koshlyakova, N.N., Schäfer, C., Scholz, R., Rastsvetaeva, R.K. (2017): Ferrorhodonite, CaMn3Fe[Si5O15], a new mineral species from Broken Hill, New South Wales, Australia. Physics and Chemistry of Minerals: 44: 323-334.

Internet Links for FerrorhodoniteHide

Localities for FerrorhodoniteHide

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)
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill district
Shchipalkina, N.V., Chukanov, N. V., Aksenov, S.M., McCammon, C., Pekov, I.V., Belakovskiy, D.I., Britvin, S.N., Koshlyakova, N.N., Schäfer, C., Scholz, R. and Rastsvetaeva, R.K. (2016) Ferrorhodonite, IMA 2016-016. CNMNC Newsletter No. 32, August 2016, page 916; Mineralogical Magazine, 80, 915–922; Shchipalkina, N.V., Chukanov, N.V., Pekov, I.V., Aksenov, S.M., McCammon, C., Belakovskiy, D.I., Britvin, S.N., Koshlyakova, N.N., Schäfer, C., Scholz, R., Rastsvetaeva, R.K. (2017): Ferrorhodonite, CaMn3Fe[Si5O15], a new mineral species from Broken Hill, New South Wales, Australia. Physics and Chemistry of Minerals, 44, 323-334.
Germany
 
  • Rhineland-Palatinate
    • Eifel
      • Laach lake volcanic complex
        • Mendig
          • Niedermendig
            • Wingertsberg
in the collection of Christof Schäfer
Mineral and/or Locality  
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