Skuleboda ( sv, Skuleboda kvartsfältspatbrott) was a

quartz Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical form ...

and

feldspar Feldspars are 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 ''plagioclase'' (sodium-calcium) feldsp ...

mine near

Vänersborg Vänersborg () is a locality and the seat of Vänersborg Municipality, Västra Götaland County, Sweden with 23,882 inhabitants (out of a municipal total of 39,591) Until 1997 it was the capital of Älvsborg County, which was dissolved in 1998. Sin ...

, in western Sweden. Mining at Skuleboda begun in 1927, then halted the same year and continued again from 1931 to 1934. The mined deposit is a

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 com ...

with a length of 45 m and a maximum width of 10 m. It contains

amazonite Amazonite, also known as Amazonstone, is a green tectosilicate mineral, a variety of the potassium feldspar called microcline. Its chemical formula is KAlSi3O8, which is polymorphic to orthoclase. Its name is taken from that of the Amazon River, ...

feldspar. Rare occurrences of yttrotantalite has been found in the mined pegmatite.

References

{{Reflist 1927 establishments in Sweden 1934 disestablishments in Sweden Feldspar mines in Sweden Quartz mines in Sweden Vänersborg Municipality Former mines in Sweden