Distribution of boron in the Tip Top pegmatite, Black Hills, South Dakota

Journal Article · Sat Feb 01 00:00:00 EST 1986 · Geology; (United States)

DOI:https://doi.org/10.1130/0091-7613(1986)14<119:DOBITT>2.0.CO;2· OSTI ID:6913721

Shearer, C K; Papike, J J

Experimental evidence has shown the importance of boron on the crystallization behavior of granitic systems; however, the intercrystalline and intracrystalline distribution of boron in mineral phases crystallizing from granitic systems is not well documented. The distribution of boron between coexisting phases in the Tip Top pegmatite, South Dakota, is as follows: beryl ca = quartz ca = triphylite ca = montebrasite ca = potassium feldspar < biotite < albite < muscovite < spodumene << tourmaline. The bulk boron content of the Tip Top pegmatite decreases significantly with the termination of tourmaline crystallization. The significant decrease in boron in the inner zones of the pegmatite is consistent with the depletion of boron in the granite melt by either the crystallization of tourmaline from the granitic melt or the partitioning of boron into an exsolved aqueous solutions. 35 references.

• Research Organization: South Dakota School of Mines and Technology, Rapid City
• DOE Contract Number: FG01-84ER13259
• OSTI ID: 6913721
• Journal Information: Geology; (United States), Vol. 14:2
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
BORON
DISTRIBUTION
PEGMATITES
GEOCHEMISTRY
ALBITE
BERYL
BIOTITE
CRYSTALLIZATION
FELDSPARS
GEOLOGIC DEPOSITS
MINERALS
MUSCOVITE
QUARTZ
SOUTH DAKOTA
TOURMALINE
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
BERYLLIUM COMPOUNDS
BERYLLIUM SILICATES
BORON COMPOUNDS
BORON SILICATES
CHALCOGENIDES
CHEMISTRY
ELEMENTS
FEDERAL REGION VIII
GRANITES
IGNEOUS ROCKS
MICA
NORTH AMERICA
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PLUTONIC ROCKS
ROCKS
SEMIMETALS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
USA
580400* - Geochemistry- (-1989)