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File Created: 13-Sep-1985 by Tom G. Schroeter (TGS)
Last Edit:  27-Mar-2022 by Nicole Barlow (NB)

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NMI 094E6 Cu6
BCGS Map 094E043
Status Showing NTS Map 094E06W
Latitude 057º 28' 32'' UTM 09 (NAD 83)
Longitude 127º 25' 14'' Northing 6371425
Easting 594716
Commodities Silver Deposit Types H04 : Epithermal Au-Ag-Cu: high sulphidation
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Alberts Hump occurrence is located 500 metres due east of the summit of Alberts Hump, south of Abesti Creek, and 3.2 kilometres west of the AL (Bonanza) occurrence (094E 079). Smithers is located 300 kilometres to the south. The occurrence lies within the Omineca-Cassiar Mountains in the west-central portion of the Toodoggone Gold Camp.

The Alberts Hump showing is situated within a Mesozoic volcanic arc assemblage which lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Tertiary sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins. 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. Takla volcanics have been intruded by the granodiorite to quartz monzonite Black Lake Suite of Early Jurassic age and are in turn unconformably overlain by or faulted against Lower Jurassic calcalkaline volcanics of the Toodoggone Formation (Hazelton Group).

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 Adoogacho and Metsantan members of the Toodoggone Formation underlie the 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 Alberts Hump showing is underlain by a thick succession of primarily andesitic crystal and crystal lapilli tuff, tuff breccia, flows and associated hypabyssal phases (Assessment Report 11157). For a more detailed account of the local geology refer to the AL (Bonanza) occurrence (094E 079).

Numerous zones of intensive and extensive clay and quartz alteration occur in a 10 square kilometre area that roughly is bounded by Alberts Hump, Tuff Peak, and Metsantan Mountain. In these areas, the altered assemblages are most prevalent in flows of the Metsantan Member but transcends the contact and extends into underlying ash-flow tuffs of the Adoogacho Member near Alberts Hump. All the altered zones are related to and centred on faults. The alteration assemblages are typically zoned outward from a central core of microcrystalline silica, minor clay minerals and alunite, with or without pyrite, and trace anatase. Irregular cavities and narrow open fractures are lined with quartz druse and interlocking tabular barite crystals occur in massive zones of microcrystalline silica. Outward there is a transition to annular zones of predominantly dickite, nacrite, quartz and sodium-rich alunite, comprising argillic alteration. These argillic zones in turn grade outward into broad peripheral zones of propylitic alteration with chlorite, epidote, and carbonate replacing plagioclase and mafic phenocrysts and the matrix of rocks. Pyrite is widespread in concentrations up to 5 per cent (Bulletin 86).

The Alberts Hump prospect consists of one of these alteration zones and consists of a large irregularly shaped zone, roughly 1 square kilometre, of intensive and extensive clay and quartz alteration. Geochronological studies using alunite from the alteration zone at the Alberts Hump prospect yielded an age determination of 190 +/- 7 Ma (Bulletin 86) and is considered a minimum age of alteration and mineralization.

In 1982, two drillholes by Kidd Creek Mines intersected a hypabyssal intrusion at depth with moderate pyrite concentrations. Assay results from these two drillholes did not yield any anomalous gold, but did show weak to moderate silver anomalies. A one-metre interval from drillhole A82-11 analyzed an average weighted value of 3.75 grams per tonne silver from 15 to 16 metres (Assessment Report 11157).

In 1972-73, Sumac Mines Ltd. was reported to have carried out work in the Alberts Hump area.

In 1982, Texasgulf Canada Ltd. drilled two holes totalling 203.3 metres in the Alberts Hump area.

In 2007, Christopher James Gold Corp. completed a helicopter-borne magnetic gradiometer survey consisting of 2229 line-kilometres over all historic gold deposits and MINFILE occurrences on the property, including the Alberts 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 Alberts Hump showing and discusses the work done on it.

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-A16; C388-C414; 1987-C328-C346; 1988-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 OF 306; 483
GSC P 76-1A, pp. 87-90; 80-1A, pp. 27-32
ECON GEOL Vol.86, pp. 529-554, 1991
GCNL #145,#147,#183,#192, 1984; #23(Feb.1), 1985; #165(Aug.27), 1986
IPDM Nov/Dec 1983
MIN REV September/October, 1982; July/August, 1986
N MINER July 12,26, Aug.2, Sept.20, 1984; October 13, 1986
N MINER MAG March 1988, p. 1
WIN Vol.1, #7, June 1987
W MINER April, 1982
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