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Bromellite

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Formula:
BeO
System:
Hexagonal
Colour:
White to creamy white
Hardness:
9
Name:
For Magnus von Bromell (1679-1731), Swedish physician and mineralogist.
This page provides mineralogical data about Bromellite.

Classification of Bromellite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
4.AB.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
A : Metal: Oxygen = 2:1 and 1:1
B : M:O = 1:1 (and up to 1:1.25); with small to medium-sized cations only
4.2.2.2

4 : SIMPLE OXIDES
2 : AX
7.4.1

7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
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Type Occurrence of Bromellite

Year of Discovery:
1925
Geological Setting of Type Material:
In hydrothermal calcite veins and veinlets in hematite skarn and skarnized limestones
Associated Minerals at Type Locality:

Physical Properties of Bromellite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
White to creamy white
Hardness (Mohs):
9
Cleavage:
Distinct/Good
on {10_10}
Density:
3.017 g/cm3 (Measured)    3.044 g/cm3 (Calculated)

Crystallography of Bromellite

Crystal System:
Hexagonal
Class (H-M):
6mm - Dihexagonal Pyramidal
Space Group:
P63mc
Cell Parameters:
a = 2.6983Å, c = 4.3776Å
Ratio:
a:c = 1 : 1.622
Unit Cell Volume:
V 27.60 ų (Calculated from Unit Cell)
Z:
2
Morphology:
As prismatic crystals, elongated along [0001], to 1 mm, showing pyramidal hemimorphism, with {000_1} and {10_10} well developed, {10_11} small, may be tabular parallel to {0001}; in randomly intergrown rosettelike aggregates; also as cleavage fragments, to 10 cm.
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.061 (100)
2.337 (91)
2.189 (61)
1.349 (29)
1.238 (24)
1.598 (22)
1.1482 (16)
Comments:
Recorded on synthetic material

Optical Data of Bromellite

Type:
Uniaxial (+)
RI values:
nω = 1.705 - 1.719 nε = 1.733
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of Bromellite

Formula:
BeO
Essential elements:
All elements listed in formula:
Analytical Data:
Chemical analysis of material from Långban, Sweden
Al2O3   (0.17)
Sb2O3   (0.29)
BeO    (98.02)
MgO     (0.07)
CaO     (1.03)
BaO     (0.55)
LOI     (0.85)

sum    100.98
Common Impurities:
Al,B,Ba,Ca,Fe,Mg,Si

Relationship of Bromellite to other Species

4.AB.05CredneriteCuMnO2
4.AB.10TenoriteCuO
4.AB.15DelafossiteCuFeO2
4.AB.15McconnelliteCuCrO2
4.AB.20Zincite(Zn,Mn2+,Fe2+)O
4.AB.25BunseniteNiO
4.AB.25LimeCaO
4.AB.25ManganositeMnO
4.AB.25MonteponiteCdO
4.AB.25PericlaseMgO
4.AB.25WüstiteFeO
4.AB.30PalladinitePdO
7.4.2BehoiteBe(OH)2
7.4.3ClinobehoiteBe(OH)2
7.4.4ChrysoberylBeAl2O4
7.4.5Magnesiotaaffeite-2N’2SMg3Al8BeO16
7.4.6Magnesiotaaffeite-6N’3SMg2BeAl6O12
7.4.7PericlaseMgO
7.4.8BruciteMg(OH)2
7.4.9SpinelMgAl2O4
7.4.10MeixneriteMg6Al2(OH)16(OH)2 · 4H2O
7.4.11LimeCaO
7.4.12PortlanditeCa(OH)2
7.4.13ChlormayeniteCa12Al14O32Cl2
7.4.14HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
7.4.15MarokiteCaMn23+O4
7.4.16Ranciéite(Ca,Mn)Mn4O9 · 3H2O
7.4.17HollanditeBa(Mn64+Mn23+)O16
7.4.18Romanèchite(Ba,H2O)2Mn5O10
7.4.19Todorokite(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12 · 3H2O

Other Names for Bromellite

Name in Other Languages:
German:Bromellit
Simplified Chinese:铍石
Spanish:Bromellita
Traditional Chinese:鈹石

Other Information

Yellowish white in both LW and SW UV
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Bromellite

Reference List:
Aminoff (1925), Zeitschrift für Kristallographie 62, 113-122.

American Mineralogist (1926), 11, 135.

Palache, C., Berman, H. and Frondel, C. (1944): The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides, John Wiley and Sons, Inc. (New York), 7th edition, revised and enlarged, 506-507.

Hazen, R. M. and Finger, L. W. (1986): High-pressure and high-temperature crystal chemistry of beryllium oxide. J. Appl. Phys. 59, 3728-3733.

Larsen, A. O., Asheim, A. and Berge, S. A. (1987): Bromellite from syenite pegmatite, southern Oslo region, Norway. Canadian Mineralogist 25, 425-428.

Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 79.

Internet Links for Bromellite

Localities for Bromellite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • New South Wales
    • Clive Co.
      • Torrington
H.F. Henley et al. Grafton-MacLean 1:250 000 Metallogenic Map and Mineral Deposit Data sheets, 2001
China
 
  • Hunan Province
    • Chenzhou Prefecture
      • Linwu Co.
        • Xianghualing Sn-polymetallic ore field
Xihuan Zhang and Yufeng Ren (2008): Acta Petrologica et Mineralogica 27(2), 135-151
France
 
  • Languedoc-Roussillon
    • Pyrénées-Orientales
      • Prats-de-Mollo-la Preste (Prats de Molló-la Presta)
Dubru. M, (1986) Pétrologie et géochimie du marbre à brucite et des borates associés au gisement de tungstène de Costabonne, (Pyrénées orientales, France) 930p
Norway
 
  • Telemark
    • Porsgrunn
      • Mørje
        • Sagåsen
Larsen, A.O. , Asheim, A. and Berge, S.A. (1987). Bromellite from syenite pegmatite, Southern Oslo region, Norway. Canadian mineralogist, 25,425-428.
Russia
 
  • Northern Region
    • Karelia Republic
      • Ladoga Region
        • Pitkyaranta District (Pitkäranta District)
No reference listed
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
[World of Stones 95:5-6, p64]
  • Urals Region
    • Middle Urals
      • Sverdlovskaya Oblast'
        • Ekaterinburg (Sverdlovsk)
          • Malyshevo
            • Izumrudnye Kopi area
              • Malyshevskoe deposit (Mariinskoe)
Avdonin V.N., Polenov Yu.A. (2004) Essays on Uralian minerals, - UGGA press, p. 419 (in Rus.).
Sweden (TL)
 
  • Värmland
    • Filipstad
Zeits. Krist. Min.(1925) 62, 113-122; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1028; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
      • Persberg district
        • Pajsberg
Österberg, Ö. & Nysten, P. (1994): Ett för Harstigen nytt Be-mineral. Långbansnytt. vol 10. [reprinted in: Långbansnytt. De första 20 åren 1983-2003. Långbansällskapet - Skrifter och rapporter. 2, 59]
Mineral and/or Locality  
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