Bromellite
A valid IMA mineral species - grandfathered
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About Bromellite
Formula:
BeO
Colour:
White to creamy white
Lustre:
Vitreous
Hardness:
9
Specific Gravity:
3.017
Crystal System:
Hexagonal
Name:
For Magnus von Bromell (1679-1731), Swedish physician and mineralogist.
A beryllium oxide mineral found in desilicated, skarn-like deposit and as a result of hydrothermal alteration of nepheline in nepheline syenites pegmatites.
Unique Identifiers
Mindat ID:
784
Long-form identifier:
mindat:1:1:784:1
GUID
(UUID V4):
(UUID V4):
442db04e-0dc9-4ea4-8a04-353ad2a0f101
IMA Classification of Bromellite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1925
Classification of Bromellite
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 : 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
4 : SIMPLE OXIDES
2 : AX
7.4.1
7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Bmel | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Bromellite
Vitreous
Transparency:
Transparent
Colour:
White to creamy white
Hardness:
9 on Mohs scale
Cleavage:
Distinct/Good
on {1010}
on {1010}
Density:
3.017 g/cm3 (Measured) 3.044 g/cm3 (Calculated)
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.
and does not take into account mineral colouration.
Surface Relief:
High
Chemistry of Bromellite
Mindat Formula:
BeO
Elements listed:
Common Impurities:
Al,B,Ba,Ca,Fe,Mg,Si
Chemical Analysis
Oxide wt%:
1 | 2 | |
---|---|---|
SiO2 | 0.7 % | % |
B2O3 | 1.4 % | % |
Al2O3 | 1.2 % | 0.14 % |
Fe2O3 | 0.1 % | % |
BeO | 93.2 % | 98.02 % |
CaO | 0.1 % | 1.03 % |
H2O | 3.4 % | % |
BaO | % | 0.55 % |
MgO | % | 0.07 % |
Sb2O5 | % | 0.29 % |
LOI | % | 0.85 % |
Total: | 100.1 % | 100.95 % |
Sample references:
ID | Type | Locality | Reference | Notes |
---|---|---|---|---|
1 | Saga 1 Quarry, SagÄsen, Auenlandet, Porsgrunn, Telemark, Norway | Analysis by Arne à sheim | ||
2 | Type Specimen | LÄngban Mine, LÄngban Ore District, Filipstad, VÀrmland County, Sweden | Wet chemical analysis by Dr.phil. G.K. Almström |
Crystallography of Bromellite
Crystal System:
Hexagonal
Class (H-M):
6mm - Dihexagonal Pyramidal
Space Group:
P63mc
Cell Parameters:
a = 2.6983(4) Å, c = 4.3776(4) Å
Ratio:
a:c = 1 : 1.622
Unit Cell V:
27.60 Ă
Âł (Calculated from Unit Cell)
Z:
2
Morphology:
As prismatic crystals, elongated along [0001], to 1 mm, showing pyramidal hemimorphism, with {0001} and {1010} well developed, {1011} small, may be tabular parallel to {0001}; in randomly intergrown rosettelike aggregates; also as cleavage fragments, to 10 cm.
Comment:
synthetic
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0017664 | Bromellite | Aminoff G (1925) Ueber Berylliumoxyd als Mineral und dessen Kristallstruktur. _cod_database_code 1010943 Zeitschrift fur Kristallographie 62 113-122 | 1925 | 0 | 293 | ||
0011539 | Bromellite | Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York Crystal Structures 1 85-237 | 1963 | 0 | 293 | ||
0019176 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 293 | |
0019177 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 293 | |
0019178 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 293 | |
0019179 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 293 | |
0019180 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 1.1 | 293 | |
0019181 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 2.2 | 293 | |
0019182 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 3.8 | 293 | |
0019183 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 4 | 293 | |
0019184 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 5 | 293 | |
0019185 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 293 | |
0019186 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 543 | |
0019187 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 763 | |
0019188 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 963 | |
0019189 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 1073 | |
0019190 | Bromellite | Hazen R M, Finger L W (1986) High-pressure and high-temperature crystal chemistry of beryllium oxide Journal of Applied Physics 59 3728-3733 | 1986 | Synthetic | 0 | 1183 | |
0017437 | Bromellite | Zachariasen W (1925) Ueber die Kristallstruktur von BeO _cod_database_code 1010526 Norsk Geologisk Tidsskrift 8 189-200 | 1925 | 0 | 293 | ||
0015173 | Bromellite | Xu Y N, Ching W Y (1993) Electronic, optical, and structural properties of some wurtzite crystals Physical Review B48 4335-4351 | 1993 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
2.061 Ă | (100) |
2.337 Ă | (91) |
2.189 Ă | (61) |
1.349 Ă | (29) |
1.238 Ă | (24) |
1.598 Ă | (22) |
1.1482 Ă | (16) |
Comments:
Recorded on synthetic material
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
Stage 4b: Highly evolved igneous rocks | >3.0 |
35 : Ultra-alkali and agpaitic igneous rocks | |
Stage 7: Great Oxidation Event | <2.4 |
47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Bromellite
General Appearance of Type Material:
White hexagonal crystals
Place of Conservation of Type Material:
Swedish Museum of Natural History, Stockholm, Sweden
Geological Setting of Type Material:
In hydrothermal calcite veins and veinlets in hematite skarn and skarnized limestones
Associated Minerals at Type Locality:
Reference:
Aminoff, G. (1925) Ăber berylliumoxyd als mineral und dessen kristallstruktur. Zeitschrift fĂŒr Kristallographie: 62: 113-122.
Other Language Names for Bromellite
German:Bromellit
Russian:ĐŃĐŸĐŒĐ”Đ»Đ»ĐžŃ
Simplified Chinese:éçł
Spanish:Bromellita
Traditional Chinese:éčçł
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Bromellite associated with Chrysoberyl | BeAl2O4 |
4 photos of Bromellite associated with Phlogopite | KMg3(AlSi3O10)(OH)2 |
4 photos of Bromellite associated with Helvine | Be3Mn2+4(SiO4)3S |
3 photos of Bromellite associated with Liberite | Li2BeSiO4 |
3 photos of Bromellite associated with Phenakite | Be2SiO4 |
2 photos of Bromellite associated with Diaspore | AlO(OH) |
2 photos of Bromellite associated with Fluorite | CaF2 |
2 photos of Bromellite associated with Amesite | Mg2Al(AlSiO5)(OH)4 |
1 photo of Bromellite associated with Magnesioferrite | MgFe3+2O4 |
1 photo of Bromellite associated with Manganophyllite | K(Fe,Mg,Mn)3AlSi3O10(OH)2 |
Related Minerals - Strunz-mindat Grouping
4.AB. | Carbon Monoxide Ice | CO |
4.AB.05 | Crednerite | CuMnO2 |
4.AB.10 | Tenorite | CuO |
4.AB.15 | Delafossite | CuFeO2 |
4.AB.15 | Mcconnellite | CuCrO2 |
4.AB.20 | Zincite | ZnO |
4.AB.25 | Bunsenite | NiO |
4.AB.25 | Lime | CaO |
4.AB.25 | Manganosite | MnO |
4.AB.25 | Monteponite | CdO |
4.AB.25 | Periclase | MgO |
4.AB.25 | WĂŒstite | FeO |
4.AB.30 | Palladinite | PdO |
4.AB.35 | Hongquiite | TiO |
Fluorescence of Bromellite
Yellowish white in both LW and SW UV
Other Information
Electrical:
Pyroelectric
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Bromellite
mindat.org URL:
https://www.mindat.org/min-784.html
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References for Bromellite
Reference List:
Hofmeister, A. M., Hoering, T. C., Virgo, D. (1987) Vibrational spectroscopy of beryllium aluminosilicates: Heat capacity calculations from band assignments. Physics and Chemistry of Minerals, 14 (3) 205-224 doi:10.1007/bf00307985
Localities for Bromellite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Australia | |
| Henley et al. (2001) |
China | |
| Xihuan Zhang and Yufeng Ren (2008) |
France | |
| Dubru. M (1986) |
Norway | |
| Larsen et al. (1987) +1 other reference |
Russia | |
| [World of Stones 95:5-6 |
| Ivashchenko et al. (2006) |
| |
| Avdonin V.N. (2004) |
Sweden (TL) | |
| Aminoff G (1925) +2 other references |
Jonsson (2003) | |
Lorin (2003) | |
| Ăsterberg et al. (2003) |
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LĂ„ngban Mine, LĂ„ngban Ore District, Filipstad, VĂ€rmland County, Sweden