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File Created: 24-Oct-1992 by Keith J. Mountjoy (KJM)
Last Edit:  27-Mar-2022 by Nicole Barlow (NB)

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NMI 094E6 Au4
Name SOUTH HUMP, HUMP 86 GROUP, AL, AL 1, AL 3, AL 5-8, HYUK 1-3 FRACTION, NII FRACTION Mining Division Liard
BCGS Map 094E043
Status Prospect NTS Map 094E06W
Latitude 057º 28' 12'' UTM 09 (NAD 83)
Longitude 127º 24' 37'' Northing 6370821
Easting 595346
Commodities Gold, Silver Deposit Types H04 : Epithermal Au-Ag-Cu: high sulphidation
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The South Hump occurrence is located 1.2 kilometres southeast of the summit of Alberts Hump and 750 metres southeast of the Alberts Hump prospect (094E 085), approximately 300 kilometres north of Smithers.

Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Takla Group andesite flows and pyroclastic rocks. These Takla rocks have been intruded by plutons and other bodies of the mainly granodiorite to quartz monzonite Early Jurassic Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calcalkaline volcanics of the Toodoggone Formation (Hazelton Group).

The Adoogacho and Metsantan members of the Toodoggone Formation underlie the AL property. The Adoogacho Member consists of trachydacite ash-flow tuff with lenses of lapilli tuff, rare marlstone, and conglomerate near the base. The Metsantan Member is composed mainly of trachyandesite (latite) flows with lenses of lapilli tuff, and lahar; minor volcanic sandstone and conglomerate (Bulletin 86). The Metsantan Member, in part, directly overlies the basal Adoogacho Member and is also in fault contact with it.

The dominant structures in the area are steeply dipping faults which define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high angle, northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.

The South Hump prospect consists of four well exposed, northwest trending parallel bands of silicification, which lie within a large zone of weak argillic alteration and anomalous base-metal geochemistry. The parallel bands consist of pods and lenses of intense silicification with up to 0.5 per cent porosity, locally pyritic and containing rare barite and/or intense hematite alteration accompanying silicification. These are locally flanked by zones of intense argillic alteration and predominantly weak argillic alteration consisting of limonite alteration of mafic minerals. The eastern band is flanked on its east side by a zone of alunite, hematite and silica alteration (Assessment Report 15735).

The best assay results were from sample IS-03-84-14F, taken in 1986 from the centre of the largest band of silicification, yielding 1.48 grams per tonne gold and 13.8 grams per tonne silver (Assessment Report 15735). This silicified zone is 350 metres long by 50 metres wide.

In 1972 and 1973, Sumac Mines Ltd. was reported to have carried out work in the Alberts Hump area.

In 2007, Christopher James Gold Corp. conducted a helicopter-borne magnetic gradiometer survey consisting of 2229 line-kilometres over all historic gold deposits and MINFILE occurrences on the property, including the South Hump area. Maps completed include coloured Total Magnetic Intensity, Measured 3-D Analytic Signal; Measured Vertical Magnetic Gradient, and colour-shaded Tilt Derivative of the Total Magnetic Intensity.

See Bonanza (094E 079) for details of the Ranch (Al) property which presently contains the South Hump prospect and discusses the work done on it.

Bibliography
EMPR BULL 86
EMPR EXPL 1975-E163-E167; 1976-E175-E177; 1977-E216-E217; 1978-E244-E246; 1979-265-267; 1980-421-436; 1982-330-345; 1983-475-488; 1984-348-357; 1985-C349-C362; 1986-C388-C414; 1987-C328-C346; 1988-A16; C185-C194
EMPR FIELDWORK 1980, pp. 124-129; 1981, pp. 122-129, 135-141; 1982, pp. 125-127; 1983, pp. 137-138, 142-148; 1984, pp. 139-145, 291-293; 1985, pp. 167-169, 299; 1987, pp. 111, 114-115; 1989, pp. 409-415; 1991, pp. 207-216
EMPR GEM 1969-103; 1971-63-71; 1973-456-463
EMPR GEOLOGY 1977-1981, pp. 156-161
EMPR MAP 61 (1985)
EMPR PF (Photogeologic Interpretation Map of the Northern Omineca area, Oct. 1964, Canadian Superior Exploration Limited-in 94E General File)
GSC BULL 270
GSC OF 306; 483
GSC P 76-1A, pp. 87-90; 80-1A, pp. 27-32
ECON GEOL Vol.86, pp. 529-554, 1991
GCNL #23(Feb.1), 1985; #165(Aug.27), 1986
IPDM Nov/Dec 1983
MIN REV September/October, 1982; July/August, 1986
N MINER October 13, 1986
N MINER MAG March 1988, p. 1
WIN Vol.1, #7, June 1987
W MINER April, 1982
*Bowen, B.K. (2012): Technical Report on the Ranch Project, for Guardsmen Resources Inc., May 18, 2012
Forster, D.B. (1984): Geology, Petrology and Precious Metal Mineralization, Toodoggone River Area, North-Central British Columbia, Unpub. Ph.D. Thesis, University of British Columbia
Diakow, L.J. (1990): Volcanism and Evolution of the Early and Middle Jurassic Toodoggone Formation, Toodoggone Mining District, British Columbia, Ph.D. Thesis, University of Western Ontario
Falconbridge File
Chinapintza Mining Corp. (2020-09-18): NI 43-101 Technical Report, Geological Introduction to Chinapintza Mining Corp.'s Ranch Gold Project, Toodoggone Region, British Columbia, Canada
Chinapintza Mining Corp. (2021-06-22): Amended Technical Report: NI 43-101 Technical Report, Geological Introduction to Chinapintza Mining Corp.’s Ranch Gold Project, Toodoggone Region, British Columbia, Canada

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