Journal - South African Institute of Mining and Metallurgy . — Ficn— SECTION OF NO 4 LODE 80 FT DOWN Dec. 1907 Harry D. Griffiths Not 7. H of the quartz and hanging wall of the greifairly regular, and in places attains * ft. Bothquartz and greisen carry cassiterite, the formeiin large irregularly disseminated masses ol abrown or black colour, or in stringers followingfOotwall and joints, the latter being in fine particlesevenly disseminated, of a brownish colour showingonl\ on panning. Wolfram also occurs in placeswhere the quart/, is poor in cassiterite, the twoappearing to interchange with o
Journal - South African Institute of Mining and Metallurgy . — Ficn— SECTION OF NO 4 LODE 80 FT DOWN Dec. 1907 Harry D. Griffiths Not 7. H of the quartz and hanging wall of the greifairly regular, and in places attains * ft. Bothquartz and greisen carry cassiterite, the formeiin large irregularly disseminated masses ol abrown or black colour, or in stringers followingfOotwall and joints, the latter being in fine particlesevenly disseminated, of a brownish colour showingonl\ on panning. Wolfram also occurs in placeswhere the quart/, is poor in cassiterite, the twoappearing to interchange with one another ;do wolfram has so far been detected in thegreisen. Tbe granite intervening between the lodes hasnot been explored ; but generally its highstateoldecomposition would suggesl the idea that it hasbeen subjected to decomposing ag uch as ascending vapours or solutions, and that it mayform part and parcel of a wide mineralised is likely therefore that in places it may showmasses impregnated with cassiterite similarly tothe occurrences in
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Keywords: ., bookcentury1800, booksubjectmetall, booksubjectmineralindustries
