The twisting Grimsel Pass on the right flank - seen from the top of the Furka Pass
The imposing Hotel Glacier du Rhone in the hamlet of Gletch at the foot of the Furka and Grimsel passes
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).
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.
We test drive the Alpmobil on the Grimsel Pass
, a high-altitude drive with hair-raising sheer drops.
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).
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. Below the tiny lake called Trubtensee, west of the pass, a Strahler named Lucek in 1955 collected many specimens showing small, half closed iron roses resting on aplite matrix with quartz, fluorapatite, pyrite, and corroded crystals of the very rare species kainosite.
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.
Of the remaining Swiss localities described below, all except Val Giuv lie in the great block of mountains, the eastern part of the Berner Alps, lying northwest of the Rhone and above the Grimsel Pass
, in the Aare massif.