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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  09-Jun-2022 by Karl A. Flower (KAF)

Summary Help Help

NMI 092L5 Lst1
Name JEUNE LANDING (L.1582), NEROUTSOS INLET, LYONS ISLET, SOUTHEAST ARM-QUATSINO SOUND Mining Division Nanaimo
BCGS Map 092L043
Status Past Producer NTS Map 092L05E
Latitude 050º 27' 32'' UTM 09 (NAD 83)
Longitude 127º 31' 14'' Northing 5590700
Easting 605013
Commodities Limestone Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Jeune Landing (L.1582) occurrence is located on the east side of Neroutsos Inlet, approximately 9.8 kilometres northwest of Port Alice.

A broad band of limestone of the Upper Triassic Quatsino Formation extends from Rupert Inlet south-southeast for 15 kilometres along the east side of Neroutsos Inlet (southeast arm of Quatsino Sound). This band forms the northern segment of a limestone belt that continues southeast for 120 kilometres to Tlupana Inlet. The band narrows to the southeast from a maximum width of 8 kilometres at Rupert Inlet to 5 kilometres in the vicinity of Jeune Landing. The width of the band is likely due to the repetition of beds by northwest trending faults. A northeast trending strike slip fault offsets the band from the main limestone belt to the southeast.

Underlying basaltic flows of the Upper Triassic Karmutsen Formation (Vancouver Group) outcrop along the east side of the band. A narrow southeast trending wedge of argillite and black limestone of the Upper Triassic Parsons Bay Formation (Vancouver Group) is infaulted along the centre of the band in its southern half. Bedding generally strikes north-northwest and dips 20 to 40 degrees southwest. Just north of a quarry on Lot 1582, the limestone strikes 153 degrees and dips 40 degrees southwest.

Exposures in the vicinity of Marble River, along Rupert Inlet, reveal light grey limestone that often displays a brecciated texture. appearance. Thin chert beds are locally present. The limestone here is reported to be magnesian in places. Further south, near Jeune Landing, the band is generally composed of fine grained, light to dark grey limestone with a few black beds. White to dove grey high calcium limestone containing beds of pure dolomite occur in this vicinity. A sample across a 2.4-metre-thick dolomite bed assayed 19.00 per cent MgO (CANMET Report 811, p. 138, Sample 3). Five chip samples taken along various road cuts in the vicinity of Jeune Landing over lengths of between 36.6 and 195 metres displayed the following percentage range of values (Minister of Mines Annual Report 1968 page 318, Samples 7,8,10,11,12);

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CaO: 53.08 - 54.12

MgO: 0.79 - 1.89

Insolubles: 0.59 - 1.25

R2O3: 0.18 - 0.33

Fe2O3: 0.04 - 0.17

MnO: 0.005 - 0.016

P2O5: 0.01

Sulphur: <0.01 - 0.02

Ig. Loss: 43.55 - 43.87

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Work History

The limestone has been quarried at two locations on the east side of Neroutsos Inlet for the Port Alice pulp mill to the south. A quarry on Lot 1581, 0.9 kilometre northwest of Jeune Landing, was in operation between 1919 and 1925. A second quarry was opened up in 1925 on Lot 1582, 2.5 kilometres northwest of Jeune Landing. This quarry was operated continuously up to 1960. Between 1919 and 1960 313,111 tonnes of limestone were quarried. In 2004 and 2005, Sechelt Industrial Minerals completed programs of prospecting, rock sampling, geological mapping and percussion drilling on the area. During 2010 through 2017, Homegold Resources completed programs of geological mapping, photogeological interpretation and rock sampling on the area as the Dolomite claims. This work centered on the Jeune Landing Dolomite (MINFILE 092L 461) occurrence to the south.

Bibliography
EMPR AR 1947-217; 1954-183; 1955-92; 1956-154; 1957-88; 1958-97; 1959-176; 1960-147; *1968-312-314,318
EMPR ASS RPT 27800, 31943, 33944, 34533, 35732, 37218
EMPR OF 1992-18, p. 30
EMPR PF (Report on Limestone Deposits of the Pacific Northwest, p. 1 (in 092L 279 File))
GSC ANN RPT 1886
GSC BULL 242
GSC MAP 4-1974; 255A; 1552A
GSC OF 9; 170; 463
GSC P 69-1A; 70-1A; 72-44; 74-8
GSC SUM RPT 1918 Part B; 1929 Part A, pp. 103,109,110
CANMET RPT *811, Part 5, pp. 137,138
Carson, D.J.T. (1968): Metallogenic Study of Vancouver Island with emphasis on the Relationship of Plutonic Rocks to Mineral Deposits, Ph.D. Thesis, Carleton University, Ottawa
Lockie, D.A. (1957): A Petrographic Analysis of Some Limestones of Southwestern British Columbia, University of British Columbia unpub. Thesis, pp. 21,24,25
Sangster, D.F. (1964): The Contact Metasomatic Magnetite Deposits of Southwestern British Columbia, Ph.D. Thesis, University of British Columbia
EMPR PFD 673358

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