Bromellite Mineral Data

General Bromellite Information

Chemical Formula:

BeO

Composition:

Molecular Weight = 25.01 gm

Beryllium 36.03 % Be 100.00 % BeO

Oxygen 63.97 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

BeO

Environment:

Occurs with swedenborgite.

IMA Status:

Valid Species (Pre-IMA) 1825

Locality:

Langbanshyttan, Vermland, Sweden. Link to MinDat.org Location Data.

Name Origin:

For Magnus von Bromell (1670-1731), Swedish physician and mineralogist.

Name Pronunciation:

Bromellite + Pronunciation

Synonym:

ICSD 62726

PDF 35-818

Bromellite Image

Images:

Bromellite

Comments: Nearly colorless translucent crystalline bromellite in chloritic schistose rock.
Location: Pitkyaranta, Republic of Karelia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Bromellite Magnesioferrite

Comments: A micro, water color, hexagonal or barrel shaped crystal of white bromellite to about 0.3 mm on yellowish calcite with associated black magnesioferrite.
Location: Langban, Varmland, Sweden. Scale: 18x9x10mm.
© Tom Loomis / Dakota Matrix

Bromellite Crystallography

Axial Ratios:

a:c = 1:1.62686

Cell Dimensions:

a = 2.68, c = 4.36, Z = 2; V = 27.12 Den(Calc)= 3.06

Crystal System:

Hexagonal - Dihexagonal PyramidalH-M Symbol (6mm) Space Group: P 6₃mc

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

By Intensity(I/I_o): 2.061(1), 2.337(0.91), 2.189(0.61),

Forms:

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Forms: ( 1 1 2) ( 1 0 1) ( 0 1 0) ( 0 0 1)

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Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, Note: wurtzite structure

Physical Properties of Bromellite

Cleavage:

{1010} Distinct

Color:

White.

Density:

3.017

Diaphaneity:

Transparent to translucent

Hardness:

9 - Corundum

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Bromellite

Gladstone-Dale:

CI meas= -0.003 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2373,KPDmeas= 0.2406,KC= 0.24
Ncalc = 1.72 - 1.73

Optical Data:

Uniaxial (+), w=1.719, e=1.733, bire=0.0140.

Calculated Properties of Bromellite

Electron Density:

Bulk Density (Electron Density)=2.89 gm/cc
note: Specific Gravity of Bromellite =3.02 gm/cc.

Fermion Index:

Fermion Index = 0.36
Boson Index = 0.64

Photoelectric:

PE_Bromellite= 0.31 barns/electron
U=PE_Bromellite x rElectron Density= 0.90 barns/cc.

Radioactivity:

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

Bromellite Classification

Dana Class:

04.02.02.02 (04)Simple Oxides

(04.02)with a cation charge of 2+ (A++ O)

(04.02.02)Dana Group

04.02.02.01 Zincite (Zn,Mn)O P 6₃mc 6mm

04.02.02.02 Bromellite BeO P 6₃mc 6mm

Strunz Class:

04.AB.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.A - Metal:Oxygen = 2.1 and 1:1

04.AB -M:O = 1:1 (and up to 1:1.25); with small to medium-sized cations only

04.AB.20 Bromellite BeO P 6₃mc 6mm

04.AB.20 Zincite (Zn,Mn)O P 6₃mc 6mm

Other Bromellite Information

References:

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

See Also:

Links to other databases for Bromellite :
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 - University of Colorado - Mineral Structure Data
16 - WWW-MINCRYST

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Ask about Bromellite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Bromellite

BeO
Dana No: 04.02.02.02 Strunz No: 04.AB.20
Locality:

Notes: