In 1995, the mine was completely emptied, and in the following years the area began rehabilitation. ==Chemical discoveries== The mine's elemental history began in 1787, when Lieutenant Carl Axel Arrhenius found an unidentified black mineral.
The mine is likely the first feldspar mine in Sweden, starting in 1790.
It was not until 1794 that Finnish chemist Johan Gadolin fully analysed the mineral and found that 38% of its composition was a new, unidentified earth element.
These elements include yttrium (Y), erbium (Er), terbium (Tb), and ytterbium (Yb) and were first described in 1794, 1842, 1842, and 1878, respectively.
These elements include yttrium (Y), erbium (Er), terbium (Tb), and ytterbium (Yb) and were first described in 1794, 1842, 1842, and 1878, respectively.
This demand took off in the 1860s, leading to deeper mining efforts at Ytterby.
These elements include yttrium (Y), erbium (Er), terbium (Tb), and ytterbium (Yb) and were first described in 1794, 1842, 1842, and 1878, respectively.
Feldspar and quartz mining continued until 1933, when the mine was shut down.
With 177 years of feldspar mining, it was the longest-mined feldspar mine in Sweden. Towards the end of the 1940s, the Swedish state, through the REF (Riksnämnden för ekonomisk försvarsberedskap) became interested in possible usage of the mine.
In 1953, the mine was renovated and used for the storage of jet fuel - MC 77.
The storage of jet fuel ended in 1978.
In 1989 the ASM International society installed a plaque at the former entrance to the mine, commemorating the mine as a historical landmark. In addition, scandium (Sc) and three other lanthanides—[(Ho, named after
In 1995, the mine was completely emptied, and in the following years the area began rehabilitation. ==Chemical discoveries== The mine's elemental history began in 1787, when Lieutenant Carl Axel Arrhenius found an unidentified black mineral.
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