| Mineralogy: The main mineral in HellvikSplitt is a calcisodium-felspar located between the neighbouring minerals andesin and labrador, and is thus perceived as a labradorite. This kind of rock is a gabbro, as well as a very light plagioclasite (anortosite). Originally this mineral was light grey and extremely hard, but after a partial metmorphosis the we have today is whiter and tougher. The ratio between the modified and the original plagioclasite is roughly 50 : 50. Chemical analyze
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