OR/15/033 Appendix 1: Carrock Mine samples collected May 2013
Shaw, R P. 2015. The Underground Geology of part of the Carrock Tungsten Mine, Caldbeck Fells. British Geological Survey Internal Report, OR/15/033. |
Water samples
pH meter calibration
- Air temperature 10.00⁰C Buffer
- pH = 6.95
A — Grainsgill Beck downstream of mine levels and tips just upstream of road bridge:
- Temperature = 6.2⁰C
- pH = 7.15
B — Grainsgill Beck just below mine levels and tip:
- Temperature = 5.7⁰C
- pH = 7.16
C — Grainsgill Beck upstream of all workings adjacent to old mine water pipe intake:
- Temperature = 6.9⁰C
- pH = 7.03
J — Brandy Gill — at bottom just upstream of mine road bridge:
- Temperature = 5.6⁰C
- pH = 7.27
All underground water samples were collected before water was otherwise disturbed.
D — No 1 level entrance by gate:
- Temperature = 6.4⁰C
- pH = 7.60
E — Harding Vein South (level here ‘smells’ (chemicals in tailings? 30 years after emplacement in old stopes):
- Temperature = 5.1⁰C
- pH = 7.06
F — Cross cut to Smith Vein:
- Temperature = 5.1⁰C
- pH = 7.55
G — Harding Vein North:
- Temperature = 6.5⁰C
- pH = 7.69
Note that dipiridol largely leaked prior to sampling
H — Harding Vein North — beyond Emmerson Vein junction (water deep with slow velocity):
- Temperature = 6.1⁰C
- pH = 8.07
I – Emmerson Vein Junction:
- Temperature = 7.69⁰C
- pH = 7.27
Tailings material samples
Z — 'Brown' tailings from 1970s/80s mill tip on north bank of gill.
Y — 'White' 1914/18 vintage tailings on south side of gill.
X — Tailings by mine site of probable 1970s/80s vintage but could be older and may incorporate 19th century lead mine tailings.
W — Harding Vein South from level floor near cross cut level junction.
V — Harding Vein South from level floor adjacent to dam blocking stope which contains tailings disposed of into old stopes in 1970s/80s.
U — Grab sample of ore material from ore chute on Harding Vein North.
T — Ore material from level floor Harding Vein North.
Wall rock samples
Smith Vein workings
1 — Greisenised granite, south forefield.
2 — Granite adjacent to contact.
3 — Hornfels adjacent to granite contact
4 — Hornfels 5 m into ‘new’ crosscut.
5 — Hornfels near 1st lead vein.
6 — ?Hornfels at gabbro contact.
7 — Gabbro at gabbro/hornfels contact.
8 — Veins at gabbro/hornfels contact.
9 — Gabbro at 1st blind rise.
10 — Gabbro at 2nd blind rise.
11 — Gabbro Smith Vein North approaching Smith Vein East.
12 — Loose core sample in same area
13 — Smith Vein North forefield — very sulphide rich
14 — Smith Vein East forefield — very sulphide rich.
15 — Hornfels — 1m from ‘big’ lead vein.
Harding Vein Workings
16 — Gabbro from forefield.
Waterfall Vein Workings
17 — Altered gabbro.
Vein material samples
- No_1_Level
- TUNGSTEN VEINS
Smith Vein
V1 — Near south forefield.
V2 — Near south forefield.
V3 — Blue secondary coating near forefield.
V4 — Wolframite ca 50m into Smith Vein South.
V5 — Smith Vein North forefield — fluorite.
V6 — Smith Vein North forefield — orange fluorescing mineral (calcite?).
V7 — Smith Vein East forefield.
V8 — Smith Vein East forefield — scheelite.
Harding Vein
V9 — Vein north of Emmerson Cross Cut.
V10 — Vein in last boxhole south of Emmerson Cross Cut.
Waterfall Vein
V11 — Forefield north end.
V12 — South of Harding North Cross Cut.
- LEAD VEINS
V13 — (2 bags) ‘Large’ lead vein east wall Smith Vein North.
V14 — ‘Small’ lead vein Smith Vein North.
V15 – ‘Small’ lead vein in main cross cut between Smith and Harding Veins.
V16 — ‘Large’ lead vein west wall Harding Vein North.
- No 3 Level
- TUNGSTEN VEINS
Smith Vein
V17 — Sulphide rich tungsten ore, east wall.
V18 — Sheelite ore, east wall.
- LEAD VEINS
V19 — ‘out-bye’ lead vein.