Gairloch in North-West
III.—Natural History of Gairloch
Chapter X.—Minerals of Gairloch, by Professor W. Ivison Macadam, F.C.S.,
F.I.C., M.M.S., &c, Edinburgh
The following minerals were obtained in the localities mentioned, but
the list is very incomplete. Time has not permitted of analyses being made
of many samples, but such are now under examination, and will be available
for a further edition of this work:—
Agalmatolite—Black Rock, Tollie.
Albite feldspar—Loch Fionn.
Barytes—Black Rock, Tollie.
Calcite—Black Rock, Tollie, &c.
Chalcedony—Glen Logan, &c.
Chlorite—Loch Gruinard, &c.
Logan, Slioch, &c
Epidote—Loch Fionn, Tollie Rock.
Heliotrope, or Bloodstone—Glen
Hornblende—Loch Gruinard, Loch Fionn, &c.
(Massive)—Glen Logan, &c.
Limonite (Bog iron ore)—South Erradale, &c.
Marcasite—Glen Logan, Coppachy, &c.
Muscovite—Loch Fionn, &c.
Oligoclase feldspar—Loch Fionn, &c &c.
Pyrite—Glen Logan, Coppachy, &c.
Pyrolusite (Dendritic markings)—Loch Fionn.
(common)—Glen Logan, &c.
Rock crystal—Black Rock, Tollie (small
Serpentine—Black Rock, Tollie.
Smoke quartz—Tollie Rock.