Hambergite (Be₂BO₃OH) is a

beryllium Beryllium is a chemical element; it has Symbol (chemistry), symbol Be and atomic number 4. It is a steel-gray, hard, strong, lightweight and brittle alkaline earth metal. It is a divalent element that occurs naturally only in combination with ...

borate mineral The Borate Minerals are minerals which contain a borate anion group. The borate (BO3) units may be polymerised similar to the SiO4 unit of the silicate mineral class. This results in B2O5, B3O6, B2O4 anions as well as more complex structures whic ...

named after Swedish explorer and mineralogist

Axel Hamberg Axel Hamberg (17 January 1863 – 28 June 1933) was a Swedish mineralogist, geographer and explorer. Biography Hamberg was born in Stockholm, Sweden. He was the son of Nils Peter Hamberg (1815-1902) and Emma Augusta Christina Härnström (18 ...

(1863–1933). The mineral occurs as white or colorless

orthorhombic crystals In crystallography, the orthorhombic crystal system is one of the 7 crystal systems. Orthorhombic lattices result from stretching a cubic lattice along two of its orthogonal pairs by two different factors, resulting in a rectangular prism with a r ...

Occurrence

Hambergite occurs in beryllium bearing

granite Granite ( ) is a coarse-grained (phanerite, phaneritic) intrusive rock, intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly coo ...

pegmatite A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than and sometimes greater than . Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic c ...

s as a rare accessory phase. It occurs associated with

beryl Beryl ( ) is a mineral composed of beryllium aluminium Silicate minerals#Cyclosilicates, silicate with the chemical formula Be3Al2(SiO3)6. Well-known varieties of beryl include emerald and Aquamarine (gem), aquamarine. Naturally occurring Hex ...

danburite Danburite is a calcium boron silicate mineral with a chemical formula of CaB2(SiO4)2. It has a Mohs hardness of 7 to 7.5 and a specific gravity of 3.0. The mineral has an orthorhombic crystal form. It is usually colourless, like quartz, but can ...

apatite Apatite is a group of phosphate minerals, usually hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of Hydroxide, OH−, Fluoride, F− and Chloride, Cl− ion, respectively, in the crystal. The formula of the admixture of ...

spodumene Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, Li Al( Si O3)2, and is a commercially important source of lithium. It occurs as colorless to yellowish, purplish, or lilac kunzite (see below), or alternatively yellow ...

zircon Zircon () is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO4. An empirical formula showing some of th ...

fluorite Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. The Mohs scal ...

feldspar Feldspar ( ; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagiocl ...

and

quartz Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tet ...

. It was first described by mineralogist and geographer W. C. Brøgger in 1890. The type locality is Salbutangen,

Helgeroa Helgeroa is a village in Larvik Municipality in Vestfold county, Norway. The village is located along the Helgerofjorden at the Skaggerak coast in southwestern Vestfold. It is located about to the north of the village of Nevlunghavn and about ...

Langesundsfjorden Langesundsfjord (), also known as the Breviksfjord (), is a stretch of fjord in Telemark county, Norway. The long fjord flows from the Skagerrak, between the islands of Sandøya, Bjørkøya, and Siktesøya in Porsgrunn Municipality and the ma ...

Larvik Larvik () is a List of municipalities of Norway, municipality in Vestfold county, Norway. It is located in the Traditional districts of Norway, traditional district of Vestfold. The administrative centre of the municipality is the Larvik (town) ...

Vestfold Vestfold () is a county and a current electoral district in Norway. Located on the western shore of the Oslofjord, it borders Buskerud and Telemark counties. The county administration is located in Tønsberg, Norway's oldest city, and the larg ...

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

where it was found in a pegmatite dike of

nepheline syenite Nepheline syenite is a holocrystalline Intrusion, plutonic rock that consists largely of nepheline and alkali feldspar. The rocks are mostly pale colored, grey or pink, and in general appearance they are not unlike granites, but dark green varie ...

composition.Mindat location data
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References

Bibliography

*Palache, P.; Berman H.; Frondel, C. (1960). "''Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)"'' John Wiley and Sons, Inc., New York, pp. 370–372. *G. Diego Gatta; Garry J. McIntyre; Geoffrey Bromiley; Alessandro Guastoni; Fabrizio Nestola American Mineralogist (2012) 97 (11–12): 1891–1897. https://doi.org/10.2138/am.2012.4232
Beryllium minerals Orthorhombic minerals Minerals in space group 61 {{mineral-stub