Hogtuvaite Mineral Data (original) (raw)

General Hogtuvaite Information

Help on Chemical Formula: Chemical Formula:

(Ca,Na)2(Fe++,Fe+++,Ti,Mg,Mn)6(Si,Be,Al)6O20

Help on Composition: Composition:

Molecular Weight = 837.17 gm

Sodium 1.37 % Na 1.85 % Na2O

Calcium 7.18 % Ca 10.05 % CaO

Magnesium 1.45 % Mg 2.41 % MgO

Titanium 5.15 % Ti 8.59 % TiO2

Manganese 0.66 % Mn 0.85 % MnO

Beryllium 1.94 % Be 5.38 % BeO

Aluminum 1.93 % Al 3.65 % Al2O3

Iron 30.02 % Fe 25.75 % FeO / 14.31 % Fe2O3

Silicon 12.08 % Si 25.84 % SiO2

Oxygen 38.22 % O

______ ______

100.00 % 98.66 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca1.5Na0.5Fe2+3Fe3+1.5Ti0.9Mg0.5Mn2+0.1Si3.6Be1.8Al0.6O20

Help on Environment: Environment:

As a late-stage metamorphic mineral in peraluminous granitic gneisses and mafic pegmatites associated with a beryllium deposit (near Mo i Rana, Norway).

Help on IMA Status: IMA Status:

Approved IMA 1994

Help on Locality: Locality:

Found about 16 km northwest of Mo i Rana, Norway Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Hogtuva Mountain, near the type locality in Norway.

Help on Name Pronunciation: Name Pronunciation:

Hogtuvaite + Pronunciation Say HOGTUVAITE

Help on Synonym: Synonym:

Hoegtuvaite

IMA1990-051

Makarochkinite

Hogtuvaite Image

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Hogtuvaite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.962:1:0.8257

Help on Cell Dimensions: Cell Dimensions:

a = 10.317, b = 10.724, c = 8.855, Z = 2; alpha = 105.77°, beta = 96.21°, gamma = 124.77° V = 769.95 Den(Calc)= 3.61

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): 2.5293(1), 8.048(0.9), 2.0979(0.63),

Click Here for Large Hogtuvaite Structure Window Crystal Structure:

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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: N86 | | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Hogtuvaite

Help on Color: Color:

Black.

Help on Density: Density:

3.85

Help on Diaphaneity: Diaphaneity:

Subtranslucent to Opaque

Help on Hardness: Hardness:

5.5 - Knife Blade

Help on Luster: Luster:

Subadamantine

Optical Properties of Hogtuvaite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.106 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.097 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.21,KPDmeas= 0.2078,KC= 0.2325
Ncalc = 1.89 - 1.9

Help on Optical Data: Optical Data:

Biaxial (-), a=1.78, g=1.82, bire=0.0400

Calculated Properties of Hogtuvaite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.70 gm/cc
note: Specific Gravity of Hogtuvaite =3.81 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PEHogtuvaite = 11.51 barns/electron
U=PEHogtuvaite x rElectron Density= 42.57 barns/cc.

Help on Radioactivity: Radioactivity:

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

Hogtuvaite Classification

Help on Dana Class: Dana Class:

69.02.01a.03 (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.40 09 - SILICATES (Germanates)

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

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

09.DH.40 Hogtuvaite (Ca,Na)2(Fe,Fe,Ti,Mg,Mn)6(Si,Be,Al)6O20 P1 1

Other Hogtuvaite Information

Help on References: References:

NAME( AntBidBlaNic2) PHYS. PROP.(37th List of New Min.,Min. Mag. 1996) OPTIC PROP.(37th List of New Min.,Min. Mag. 19)

Help on See Also: See Also:

Links to other databases for Hogtuvaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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

Hogtuvaite

(Ca,Na)2(Fe++,Fe+++,Ti,Mg,Mn)6(Si,Be,Al)6O20
Dana No: 69.02.01a.03 Strunz No: 09.DH.40
Locality:

Notes: