Surinamite Mineral Data (original) (raw)

General Surinamite Information

Help on Chemical Formula: Chemical Formula:

(Mg,Fe++)3Al4BeSi3O16

Help on Composition: Composition:

Molecular Weight = 553.76 gm

Magnesium 9.88 % Mg 16.38 % MgO

Beryllium 1.63 % Be 4.52 % BeO

Aluminum 19.49 % Al 36.83 % Al2O3

Iron 7.56 % Fe 9.73 % FeO

Silicon 15.22 % Si 32.55 % SiO2

Oxygen 46.23 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Mg2.25Fe2+0.75Al4BeSi3O16

Help on Environment: Environment:

In mylonitic mesoperthite gneiss, probably formed during high-pressure granulite facies metamorphism of aluminous rocks.

Help on IMA Status: IMA Status:

Approved IMA 1976

Help on Locality: Locality:

From the Bakhuis Mountains, Surinam. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the locality.

Help on Name Pronunciation: Name Pronunciation:

Surinamite + Pronunciation Say SURINAMITE

Help on Synonym: Synonym:

ICSD 31212

PDF 38-433

Surinamite Image

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

Click Here for Larger Surinamite Image Surinamite Comments: PPL thin-section image of blue surinamite (Sur) enclosing orthopyroxene (Opx) and sillimanite (Sil) with corderite (Crd), and quartz (Qtz). AmMin, v65:1474. Location: South Harris Igneous Complex, N.W. Scotland.Scale: Picture Size 1.2 mm. © American Mineralogist

Surinamite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.8705:1:0.846

Help on Cell Dimensions: Cell Dimensions:

a = 9.91, b = 11.384, c = 9.631, Z = 4; beta = 109.3° V = 1,025.46 Den(Calc)= 3.59

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 1.99(1), 2.435(1), 1.42(0.6),

Click Here for Large Surinamite Structure Window Crystal Structure:

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Help on Above

| | Moore P B , Araki T , American Mineralogist , 68 (1983) p.804-810, Surinamite, ca. Mg3Al4Si3BeO16: its crystal structure and relation to, sapphirine, ca. Mg2.8Al7.2Si1.2O16 View Additional jPOWD Structure files for Surinamite [1] [2] | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Surinamite

Help on Cleavage: Cleavage:

{010} Good

Help on Color: Color:

Blue, Blue green.

Help on Density: Density:

3.58

Help on Streak: Streak:

white

Optical Properties of Surinamite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.007 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2068,KPDmeas= 0.2074,KC= 0.2058
Ncalc = 1.74

Help on Optical Data: Optical Data:

Biaxial (-), a=1.738, b=1.743, g=1.746, bire=0.0080, 2V(Calc)=74, 2V(Meas)=67-68.

Calculated Properties of Surinamite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.53 gm/cc
note: Specific Gravity of Surinamite =3.59 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PESurinamite = 3.62 barns/electron
U=PESurinamite x rElectron Density= 12.81 barns/cc.

Help on Radioactivity: Radioactivity:

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

Surinamite Classification

Help on Dana Class: Dana Class:

69.02.01b.02 (69)Inosilicate Chains with Side Branches or Loops

(69.02)with P>2

(69.02.01b)Aenigmatite and related species (Sapphirine subgroup)

69.02.01b.01 Sapphirine (Mg,Al)8(Al,Si)6O20 P1 1

69.02.01b.02 Surinamite (Mg,Fe)3Al4BeSi3O16 P 21/n 2/m

69.02.01b.03 Khmaralite! (Mg,Al,Fe)16(Al,Si,Be)12O40 P 21/c 2/m

Help on Strunz Class: Strunz Class:

09.DH.55 09 - SILICATES (Germanates)

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

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

09.DH.55 Surinamite (Mg,Fe)3Al4BeSi3O16 P 21/n 2/m

Other Surinamite Information

Help on References: References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

Links to other databases for Surinamite :
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
15 - WWW-MINCRYST

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Ask about Surinamite here :
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Print or Cut-and-Paste your Surinamite Specimen Label here :

Surinamite

(Mg,Fe++)3Al4BeSi3O16
Dana No: 69.02.01b.02 Strunz No: 09.DH.55
Locality:

Notes: