Makarochkinite Mineral Data (original) (raw)

General Makarochkinite Information

Help on Chemical Formula: Chemical Formula:

Ca2Fe++4Fe+++TiSi4BeAlO20

Help on Composition: Composition:

Molecular Weight = 871.54 gm

Sodium 0.66 % Na 0.89 % Na2O

Calcium 7.54 % Ca 10.55 % CaO

Magnesium 0.70 % Mg 1.16 % MgO

Tantalum 0.15 % Ta 0.18 % Ta2O5

Titanium 3.35 % Ti 5.59 % TiO2

Manganese 0.82 % Mn 1.06 % MnO

Beryllium 0.94 % Be 2.61 % BeO

Niobium 0.41 % Nb 0.58 % Nb2O5

Aluminum 1.67 % Al 3.16 % Al2O3

Iron 32.62 % Fe 29.92 % FeO / 13.38 % Fe2O3

Silicon 14.44 % Si 30.89 % SiO2

Oxygen 36.72 % O

______ ______

100.00 % 99.96 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca1.64Na0.25Mn2+0.11Fe2+3.56Fe3+1.46Ti0.61Mg0.25Mn2+0.02Nb0.03Ta0.007Si4.48Be0.91Al0.54Fe2+0.07O18O2

Help on Environment: Environment:

Occurs in a granitic pegmatite near Lake Ishkul. Aenigmatite group. Ti analog of hogtuvaite.

Help on IMA Status: IMA Status:

Approved IMA 2003 (Dana # Added)

Help on Locality: Locality:

Ilmen Mountains (Southern Urals), Ilmen State Reserve, Chelyabinsk Oblast, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Boris A. Makarochkin (1907-1988), Russian chemist and mineralogist, who studied the rare minerals from the Ilmen Mountains and collected the mineral, but described it as a n amphibole

Help on Synonym: Synonym:

ICSD 39333

IMA2002-009a

PDF 85-1123

Makarochkinite Image

Click Here for Larger Makarochkinite Image in a New Browser Window Images:

Click Here for Larger Makarochkinite Image Makarochkinite Comments: Black grain of makarochkinite on matrix. Location: Pit No. 400, Lake Ishkul', Ilmen Mts, Chelyabinsk Oblast', Urals Region, Russia.Scale: Specimen Size 0.5 cm x 0.5 cm. © Carlo Guidarin

Makarochkinite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.9631:1:0.8253

Help on Cell Dimensions: Cell Dimensions:

a = 10.355, b = 10.751, c = 8.873, Z = 2; alpha = 105.707°, beta = 96.227°, gamma = 124.861° V = 775.66 Den(Calc)= 3.73

Help on Crystal System: Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.53(1)(213), 2.676(0.77)(203 ), 2.924(0.69)(013 ),7.997(0.57)(100 ), 2.075(0.39)(411 ), 3.12(0.32)(012 ), 4.779(0.29)(011 ), 2.41(0.28)(223 ),

Click Here for Large Makarochkinite Structure Window Crystal Structure:

Mouse
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Help on Above

| | Grew E S , Barbier J , Britten J , Yates M G , Polyakov V O , Shcherbakova E P , Halenius U , Shearer C K , American Mineralogist , 90 (2005) p.1402-1412, Makarochkinite, Ca2Fe2+4Fe3+TiSi4BeAlO20, a new beryllosilicate member of the, aenigmatite-sapphirine-surinamite group from the Il men Mountains (southern, Urals), Russia, Sample: 400shch6 View Additional jPOWD Structure files for Makarochkinite [1] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Makarochkinite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Black.

Help on Density: Density:

3.93

Help on Diaphaneity: Diaphaneity:

Subopaque

Help on Fracture: Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Help on Habit: Habit:

Equant Grains - Granular material with equel dimensions in x, y, and z.

Help on Hardness: Hardness:

5.5-6 - Knife Blade-Orthoclase

Help on Luster: Luster:

Vitreous (Glassy)

Optical Properties of Makarochkinite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.072 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.072 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2111,KPDmeas= 0.2111,KC= 0.2275
Ncalc = 1.89

Help on Optical Data: Optical Data:

Biaxial (?), a=1.799, g=1.86, bire=0.0610

Calculated Properties of Makarochkinite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.81 gm/cc
note: Specific Gravity of Makarochkinite =3.93 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEMakarochkinite = 14.25 barns/electron
U=PEMakarochkinite x rElectron Density= 54.37 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Makarochkinite is Not Radioactive

Makarochkinite Classification

Help on Dana Class: Dana Class:

69.02.01a.09 (69)Inosilicate Chains with Side Branches or Loops

(69.02)with P>2

(69.02.01a)Aenigmatite and related species (Aenigmatite subgroup)

69.02.01a.01 Aenigmatite (Na,Ca)4(Fe,Ti,Mg)12Si12O40 P1 1

69.02.01a.02 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri

69.02.01a.03 Hogtuvaite (Ca,Na)2(Fe,Fe,Ti,Mg,Mn)6(Si,Be,Al)6O20 P1 1

69.02.01a.04 Krinovite NaMg2CrSi3O10 P1 1

69.02.01a.05 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1

69.02.01a.06 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1

69.02.01a.07 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1

69.02.01a.08 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1

69.02.01a.09 Makarochkinite! Ca2Fe4FeTiSi4BeAlO20 P1 1

Help on Strunz Class: Strunz Class:

09.DH.45 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DH -Inosilicates with 4-periodic single chains, Si4O12

09.DH.45 Aenigmatite (Na,Ca)4(Fe,Ti,Mg)12Si12O40 P1 1

09.DH.45 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri

09.DH.45 Krinovite NaMg2CrSi3O10 P1 1

09.DH.45 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1

09.DH.45 Sapphirine (Mg,Al)8(Al,Si)6O20 P1 1

09.DH.45 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1

09.DH.45 Khmaralite! (Mg,Al,Fe)16(Al,Si,Be)12O40 P 21/c 2/m

09.DH.45 Makarochkinite! Ca2Fe4FeTiSi4BeAlO20 P1 1

09.DH.45 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1

09.DH.45 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1

Other Makarochkinite Information

Help on References: References:

NAME( AmMin, v90, p1402) PHYS. PROP.(AmMin, v90, p1402) OPTIC PROP.(AmMin, v90, p1402)

Help on See Also: See Also:

Links to other databases for Makarochkinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - WWW-MINCRYST

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Print or Cut-and-Paste your Makarochkinite Specimen Label here :

Makarochkinite

Ca2Fe++4Fe+++TiSi4BeAlO20
Dana No: 69.02.01a.09 Strunz No: 09.DH.45
Locality:

Notes: