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Makarochkinite

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About MakarochkiniteHide

Formula:
(Ca,Na)4[Fe2+8Fe3+2Ti2]O4[Si8Be2Al2O36]
Colour:
black
Lustre:
Vitreous
Hardness:
5½ - 6
Specific Gravity:
3.93
Crystal System:
Triclinic
Name:
Named after Russian Uralian mineralogist Boris A. Makarochkin (1908-1988).
Aenigmatite Group. Close related with Høgtuvaite.


Classification of MakarochkiniteHide

Approved
Approval Year:
2003
9.DH.40

9 : SILICATES (Germanates)
D : Inosilicates
H : Inosilicates with 4-periodic single chains, Si4O12

Physical Properties of MakarochkiniteHide

Vitreous
Transparency:
Opaque
Colour:
black
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.93 g/cm3 (Measured)    3.933 g/cm3 (Calculated)

Optical Data of MakarochkiniteHide

Type:
Biaxial
RI values:
nα = 1.821 - 1.849 nγ = 1.850 - 1.880
Max Birefringence:
δ = 0.029 - 0.031
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Visible
Comments:
X = greenish brown, Y = yellowish brown, Z = reddish brown; Y ≤ X < Z

Chemical Properties of MakarochkiniteHide

Formula:
(Ca,Na)4[Fe2+8Fe3+2Ti2]O4[Si8Be2Al2O36]
IMA Formula:
Ca4[Fe2+8Fe3+2Ti2]O4[Si8Be2Al2O36]
Common Impurities:
Na,Mn,Mg

Crystallography of MakarochkiniteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 10.355 Å, b = 10.751 Å, c = 8.873 Å
α = 105.707°, β = 96.227°, γ = 124.861°
Ratio:
a:b:c = 0.963 : 1 : 0.825
Unit Cell V:
735.7 ų
Z:
2
Twinning:
absent

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.997 Å(57)
4.779 Å(29)
3.120 Å(32)
2.924 Å(69)
2.676 Å(77)
2.530 Å(100)
2.410 Å(28)
2.075 Å(39)
Comments:
Format: d-spacing/Å (I) (hkl)

Type Occurrence of MakarochkiniteHide

General Appearance of Type Material:
equant masses, 5-50 mm across
Geological Setting of Type Material:
granitic pegmatite
Associated Minerals at Type Locality:

Synonyms of MakarochkiniteHide

Other Language Names for MakarochkiniteHide

Relationship of Makarochkinite to other SpeciesHide

Other Members of this group:
DorriteCa4(Mg3Fe3+9)O4(Si3Al8Fe3+O36)Tric.
HøgtuvaiteCa4[Fe2+6Fe3+6]O4[Si8Be2Al2O36]Tric. 1 : P1
LeucorhöniteCa2(Mg,Fe3+,Al)6(Si,Al)6O20Tric.
RhöniteCa4[Mg8Fe3+2Ti2]O4[Si6Al6O36]Tric. 1 : P1
SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]Tric. 1 : P1
WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Makarochkinite associated with TitaniteCaTi(SiO4)O

Related Minerals - Nickel-Strunz GroupingHide

9.DH.05LeucophaniteNaCaBeSi2O6FOrth. 2 2 2 : P21 21 21
9.DH.10OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2OMon.
9.DH.15HaradaiteSrVSi2O7Orth.
9.DH.15SuzukiiteBaVSi2O7Orth.
9.DH.20BatisiteBaNaNaTi2(Si4O12)O2Orth.
9.DH.20Shcherbakovite(K,Ba)KNa(Ti,Nb)2(Si4O12)O2Orth.
9.DH.25TaikaniteSr3BaMn2+2(Si4O12)O2Mon.
9.DH.30KrauskopfiteBaSi2O5 · 3H2OMon.
9.DH.35Balangeroite(Mg,Fe2+,Fe3+,Mn2+)42Si16O54(OH)40Mon.
9.DH.35GageiteMn21(Si4O12)2O3(OH)20Mon. 2/m
9.DH.40AenigmatiteNa4[Fe2+10Ti2]O4[Si12O36]Tric. 1 : P1
9.DH.40DorriteCa4(Mg3Fe3+9)O4(Si3Al8Fe3+O36)Tric.
9.DH.40HøgtuvaiteCa4[Fe2+6Fe3+6]O4[Si8Be2Al2O36]Tric. 1 : P1
9.DH.40KrinoviteNa2Mg4Cr3+2(Si6O18)O2Tric.
9.DH.40RhöniteCa4[Mg8Fe3+2Ti2]O4[Si6Al6O36]Tric. 1 : P1
9.DH.40SerendibiteCa4[Mg6Al6]O4[Si6B3Al3O36]Tric. 1 : P1
9.DH.40WelshiteCa4Mg9Sb3O4[Si6Be3AlFe2O36]Tric. 1 : P1
9.DH.40WilkinsoniteNa2Fe2+4Fe3+2(Si6O18)O2Tric. 1 : P1
9.DH.45SapphirineMg4(Mg3Al9)O4[Si3Al9O36]Mon. 2/m : P21/b
9.DH.50Khmaralite(Mg,Al,Fe)16[(Al,Si,Be)12O36]O4Mon. 2/m : P21/b
9.DH.55Surinamite(Mg,Fe)3Al4BeSi3O16Mon.
9.DH.60Deerite(Fe,Mn)6(Fe,Al)3[Si6O17]O3(OH)5Mon.
9.DH.65HowieiteNa(Fe,Mn)10(Fe,Al)2Si12O31(OH)13Tric.
9.DH.65Taneyamalite(Na,Ca)(Mn,Mg,Fe)12Si12(O,OH)44Tric.
9.DH.70JohninnesiteNa2Mn2+9Mg7(OH)8[AsO4]2[Si6O17]2Tric.
9.DH.75AgrelliteNaCa2Si4O10FTric.

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 MakarochkiniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Polyakov, V.O., Cherepivskaya, G.Ye. & Shcherbakova, Ye.P., (1986): Makarochkinite – a new beryllosilicate. In New and little-studied minerals and mineral associations of the Urals. Akad Nauk SSSR Ural’skiy Nauchnyy Tsentr. Sverdlovsk, 108–110 [in Russian].
- Barbier, J., Britten, J., Grew, E.S., Hålenius, U., Scherbakova, Y.P , Shearer, C.K. and Yates, M.G. (2004): Makarochkinite, Ca2Fe2+4 Fe3+TiSi4BeAlO20 –a new member of the aenigmatite mineral group,and the Ti-dominant analogue of høgtuvaite. (The 26th Nordic Geological Winter Meeting). GFF, 126: 65-66
- Grew et al (2005), Am.Min.: 90: 1402-1412).

Internet Links for MakarochkiniteHide

Localities for MakarochkiniteHide

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.
Russia (TL)
 
  • Chelyabinsk Oblast
    • Argayashsky District
Am. Min. 90:1402-1412 (2005); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
http://un2sg4.unige.ch/athena
 
Mineral and/or Locality  
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