Eulytite Mineral Data

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Eulytite Mineral Data

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General Eulytite Information

Chemical Formula:

Bi4(SiO4)3

Composition:

Molecular Weight = 1,112.17 gm

Silicon 7.58 % Si 16.21 % SiO₂

Bismuth 75.16 % Bi 83.79 % Bi₂O₃

Oxygen 17.26 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Bi₄(SiO₄)₃

Environment:

Found with native bismuth.

IMA Status:

Valid Species (Pre-IMA) 1827

Locality:

Saxony, near Schneeberg. Link to MinDat.org Location Data.

Name Origin:

From the Greek eulitos = "easily liquefiable", in allusion to its low melting point.

Name Pronunciation:

Eulytite

Synonym:

Eulytine

Eulytite Image

Images:

Eulytite

Comments: Brown, isometric crystals of eulytite on matrix.
Location: Schneeberg, Saxony, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Eulytite Crystallography

Cell Dimensions:

a = 10.27, Z = 4; V = 1,083.21 Den(Calc)= 6.82

Crystal System:

Isometric - HextetrahedralH-M Symbol (4 3m) Space Group: I 43d

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.2(1), 3.257(0.9), 2.752(0.85),

Crystal Structure:

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drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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Segal D J , Santoro R P , Newnham R E , Zeitschrift fur Kristallographie , 123 (1966) p.73-76, Neutron-diffraction study of Bi4Si3O12, Locality: synthetic

Physical Properties of Eulytite

Cleavage:

{???} Indistinct

Color:

Colorless, Gray, Yellow, Yellow brown, Dark brown.

Density:

6.6

Diaphaneity:

Transparent to translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Crystalline - Fine - Occurs as well-formed fine sized crystals.

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

4.5 - Between Fluorite and Apatite

Luster:

Adamantine

Streak:

white

Optical Properties of Eulytite

Gladstone-Dale:

CI meas= 0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.154,KPDmeas= 0.1591,KC= 0.1619
Ncalc = 2.07 - 2.1

Optical Data:

Isotropic, n=2.05.

Calculated Properties of Eulytite

Electron Density:

Bulk Density (Electron Density)=5.58 gm/cc
note: Specific Gravity of Eulytite =6.60 gm/cc.

Fermion Index:

Fermion Index = 0.0036215397
Boson Index = 0.9963784603

Photoelectric:

PE_Eulytite=1,431.46 barns/electron
U=PE_Eulytite x rElectron Density=7,985.09 barns/cc.

Radioactivity:

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

Eulytite Classification

Dana Class:

51.05.04.01 (51)Nesosilicate Insular SiO4 Groups Only

(51.05)with cations in >[6] coordination

(51.05.04)Dana Group

51.05.04.01 Eulytite Bi4(SiO4)3 I 43d 4 3m

Strunz Class:

09.AD.40 09 - SILICATES (Germanates)

09.A - Nesosilicates

09.AD -Nesosilicates without additional anions;

09.AD.40 Eulytite Bi4(SiO4)3 I 43d 4 3m

Other Eulytite Information

References:

NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

See Also:

Links to other databases for Eulytite :
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 (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
14 - WWW-MINCRYST

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

Eulytite

Bi4(SiO4)3
Dana No: 51.05.04.01 Strunz No: 09.AD.40
Locality:

Notes:

Aug	MAR	Jun
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2016	2017	2019