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Allt Tighe Cumhaig, Struy, Strathglass, North West Highlands, Scotland, UK

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Latitude & Longitude (WGS84): 57° 24' 7'' North , 4° 40' 59'' West
Latitude & Longitude (decimal): 57.4021854051, -4.68326763248
UK National Grid Reference:NH388378
Other/historical region names associated with this locality:Inverness-shire


Russell (1946):

"This working is situated on the northern loop of the Allt Tigh Cumhaig burn, about 350 yards up from the Struy to Cannick road, 1 3/4 miles south of Struy village.
The vein here traverses muscovite-biotite-schist and is intimately connected with, and partly incorporates, two pegmatite veins.
It is well exposed both in the bed and sides of the burn, the course of which it follows for some distance.
The vein has a direction about 30° north of west (magnetic) and is nearly vertical, varying in width from 1 foot at the north-east end of the exposure to 12 feet at the south-west end, where a level, now partially choked at the mouth, has been driven on it from the bed of the burn.
In the Geological Survey Memoir it is assumed, on apparently slender grounds, that this vein is identical with that of Loch na Mèine.
The vein-filling consists of pink baryte, with nests of crystallized quartz, many strings of black blende, smaller quantities of galena, a very little pyrite, strings of calcite, and numerous fragments of grey silicified schist, giving it in part a brecciated character. [...]
The vein is an interesting one, and in addition to the minerals mentioned, contains small crystals of harmotome.
Many interesting specimens of the veinstuff and of the minerals contained therein may be obtained from loose material derived from the old level, and which has been carried down the burn to its lower end near the road.

The first burn north of Allt Tigh Cumhaig

Here, about 470 yards up from the Struy to Cannick road, a trial level has been driven from the bed of the burn.
The vein, which follows the course of the burn for a short distance, traverses muscovite-biotite-schist and is accompanied on its south side by a pegmatite vein consisting of pink feldspar, silvery mica, and quartz.
It has a direction a little south of east, dips south at a steep angle, and is 2 1/2 feet wide where exposed.
The vein-filling is in part brecciated and consists of strings of pink and white baryte and white calcite, with a very little black blende and galena and many included fragments of greenish silicified micaceous grit.
The level, which is still open, has been driven for some little distance; the dump, however, though still fresh, contains little or no ore and the vein was obviously very poor.
The only other minerals observed were traces of chalcopyrite and marcasite."

Mineral List


10 valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

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References

Anderson, G. and Anderson, P. (1834) Guide to the Highlands and Islands of Scotland. 229, 539-540.

Memoirs of the Geological Survey of Scotland (1914) The Geology of the country round Beauly and Inverness, 98-99.

The lead, zinc, copper and nickel ores of Scotland (1921) 108-109.

Russell, A. (1946) An account of the Struy lead mines, Inverness-shire, and of wulfenite, harmotome, and other minerals which occur there. Mineralogical Magazine, vol. 27, n° 192, 147-154.

 
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