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Bromellite

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Långban, Filipstad, Värmland, Sweden
© Kjell Gatedal

Show Bromellite Photos (11)
Formula:
BeO
System:HexagonalColour: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

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:4/A.03-10
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:4.2.2.2

4 : SIMPLE OXIDES
2 : AX
Hey's CIM Ref.:7.4.1

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

Type Locality:Långban, Filipstad, Värmland, Sweden
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:
SwedenborgiteRichteriteManganophyllite

Physical Properties of Bromellite

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

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:
d-spacingIntensity
2.061 (100)
2.337 (91)
2.189 (61)
1.349 (29)
1.238 (24)
1.598 (22)
Comments:Recorded on synthetic material

Optical Data of Bromellite

Type:Uniaxial (+)
RI values: nω = 1.705 - 1.719 nε = 1.733
Maximum Birefringence:δ = 0.028

Chart 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:Be, O
All elements listed in formula:Be, O
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

Related Minerals - Nickel-Strunz Grouping):

- +
4.AB.05Crednerite
CuMnO
 
2
4.AB.10Tenorite
CuO
4.AB.15Delafossite
CuFeO
 
2
4.AB.15Mcconnellite
CuCrO
 
2
4.AB.20Zincite
(Zn,Mn
2+
 
,Fe
2+
 
)O
4.AB.25Bunsenite
NiO
4.AB.25Lime
CaO
4.AB.25Manganosite
MnO
4.AB.25Monteponite
CdO
4.AB.25Periclase
MgO
4.AB.25Wüstite
FeO
4.AB.30Palladinite
PdO
Related Minerals - Hey's Index Grouping:

- +
7.4.2Behoite
Be(OH)
 
2
7.4.3Clinobehoite
Be(OH)
 
2
7.4.4Chrysoberyl
BeAl
 
2
O
 
4
7.4.5Magnesiotaaffeite-2N’2S
Mg
 
3
Al
 
8
BeO
 
16
7.4.6Magnesiotaaffeite-6N’3S
(Mg,Fe,Zn)
 
2
Al
 
6
BeO
 
12
7.4.7Periclase
MgO
7.4.8Brucite
Mg(OH)
 
2
7.4.9Spinel
MgAl
 
2
O
 
4
7.4.10Meixnerite
Mg
 
6
Al
 
2
(OH)
 
18
·4H
 
2
O
7.4.11Lime
CaO
7.4.12Portlandite
Ca(OH)
 
2
7.4.13Mayenite
Ca
 
12
Al
 
14
O
 
33
7.4.14Hydrocalumite
Ca
 
2
Al(OH)
 
7
·2H
 
2
O
7.4.15Marokite
CaMn
 
2
O
 
4
7.4.16Ranciéite
(Ca,Mn)Mn
 
4
O
 
9
·3H
 
2
O
7.4.17Hollandite
Ba(Mn
4+
 
,Mn
2+
 
)
 
8
O
 
16
7.4.18Romanèchite
(Ba,H
 
2
O)
 
2
Mn
 
5
O
 
10
7.4.19Todorokite
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)
 
6
O
 
12
·3H
 
2
O

Other Names for Bromellite

Other Languages:
German:Bromellit
Russian:Бромеллит
Spanish:Bromellita

Other Information

Fluorescence in UV light:Yellowish white in both LW and SW UV
Health Warning: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

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Bromellite in the Natural History Museum (London) online catalogue
  • Bromellite details from Handbook of Mineralogy (PDF)
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    Localities for Bromellite

    Hide Locality List
    The 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. ? 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
    		Huang et al. (1988): Hsianghualing rocks, mineral deposits and minerals. Beijing Sci. Techn. Publ. Bur. (Beijing), 255 pp.
    France
     
    • Languedoc-Roussillon
      • Pyrénées-Orientales
        • Céret
          • 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 (Strandåsen)
    		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 (Pitkäranta) District
    		No reference listed
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		[World of Stones 95:5-6, p64]
    • Urals Region
      • Middle Urals
        • Ekaterinburgskaya (Sverdlovskaya) Oblast'
          • Ekaterinburg (Sverdlovsk)
            • Malyshevo
              • Tokovaya river (Tokovaia river)
    		Emeralds of the World English extraLapis Vol. 2 2002 pp24-35
    Sweden
     
    • 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.
        • Pajsberg
    		Kjell Gatedal; Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 7th Nov 2009 05:52:17