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.