Grimsel

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Related to Grimsel Pass: Stelvio Pass

Grimsel

(grĭm`zəl), pass, 7,159 ft (2,182 m) high, S Switzerland, between the Rhône and Aare valleys. The Grimsel Road (built 1891–94), over the pass, connects Bern and Valais cantons.
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Moreover to the railway, the tunnel will have high-voltage electricity cables, that are presently routed over the head of the Grimsel Pass and Grimselbahn has made a collaboration with Swissgrid to build this part of the venture.
And in 1868 on the Tiefengletscher--about 10 km northeast of the Grimsel Pass and about the same distance southwest of Goscheneralp--another gigantic quartz crystal cleft was opened (for good summary accounts of it see Wilson, 1984b, and Bancroft, 1984).
Switzerland's richest concentration of pink fluorite-bearing clefts corresponds rather closely to the western three-quarters of the region shown in the map in Moore (2007a) as historically having offered the richest finds of quartz gwindels: it is the east-northeast to west-southwest striking belt, about 40 km long, running between the Fieschergletscher on the southwest, through the areas around the Grimsel Pass, along the Rhonegletscher and past the Furka Pass, to the peaks called Planggenstock and Feldschijen, and up the valley called Goschenertal as far as the village of Goschencn, on the Reuss River.
Between the two glaciers named above and about 6 km west of the Grimsel Pass lies the upland area called the Zinggenstock, the site of the enormous quartz cleft discovered in 1719 and, ever since then, of rich discoveries of smoky quartz gwindels and of some of the best of Switzerland's rare amethystine quartz specimens.
The mineralized clefts showing these parageneses are distributed through a zone of the Gotthard and southern Aare massifs with an axis running roughly between the Fellital, in the east-northeast, through the Goschener Valley, the Furka Pass and Grimsel Pass areas, the Zinggenstock, and finally, in the west-southwest, to the Fieschergletscher (Fiesch Glacier, above the village of Fiesch).
In 1948 a tongue of the Gerstengletscher, just north of the Grimsel Pass, underwent large-scale melting, creating fresh rock exposures, and Hans and Alexander von Bergen were able to open a cleft which produced 770 kg of quartz crystals of many habits.
Continuing upstream along the Rhone River valley we come, about 13 km northeast of Reckingen, to the confluence with the Haslital coming in from the north, and the area, just east of that, of the Rhone Glacier and of the Grimsel Pass.
Five kilometers east of the Grimsel Pass is the Furka Pass, connecting the Swiss cantons of Wallis and Uri (we are now very near the St.
Two outlier localities for ilmenite roses, more than 30 km west-southwest of the Maderanertal region and 10 km north of the Grimsel Pass, are the old collecting sites known as Rotlaui and Kammegg, just east of the village of Gutannen in the Haslital.
The localities which are here called Rhonegletscher, Oberaar, Vorderen Zinggenstock and Fieschergletcher all lie within an area about 15 km on a side--a piece of "classic" Switzerland around the Grimsel Pass which, in mineralogical texts as elsewhere, is often called the Grimselgebiet (Grimsel area).