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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  02-Jul-2015 by Karl A. Flower (KAF)

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NMI 092P9 Mo1
BCGS Map 092P059
Status Showing NTS Map 092P09W
Latitude 051º 35' 28'' UTM 10 (NAD 83)
Longitude 120º 18' 36'' Northing 5718991
Easting 686332
Commodities Molybdenum, Tungsten, Bismuth Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Anticlimax showings are located approximately 20 kilometres north-northwest of the town of Little Fort, in the northern portion of the Crazy Fox property. The showings are molybdenum-tungsten occurrences within the Cretaceous granitic stock northeast of Tintlhohtan Lake. The property is located between 1190 and 1370 metres elevation on a low hill approximately 2.5 kilometres south of the south east end of Taweel Lake.

The property is underlain by Middle to Late Triassic Nicola Group volcanic sandstone, siltstone, and conglomerate overlying mafic breccias and massive to pillowed pyroxene-phyric basalt. Cretaceous granite and quartz-feldspar porphyry intrusions approximately 1.0 kilometre in diameter intrude the Nicola Group rocks. Locally, the units are intruded by a swarm of small dikes and contain local hornfels. The granitic rocks have been offset and twisted by north easterly directed compression. The exterior of the stock is mapped as aplite and the interior as quartz monzonite to granite in composition.

Molybdenite and wolframite occur as disseminated blebs and streaks and in the selvages of centimetre-scale quartz veinlets and smaller fractures. Occasional veinlets of massive molybdenite up to several centimetres wide have also been observed. Molybdenite and wolframite are mostly contained within shear and extensional quartz veins hosted by phyllic and argillic altered leucogranite. The granite also contains stylolitic molybdenite veins hosted by cooling cracks as well as wolframite and pyrite stylolitic cooling cracks. The centre of the mineralizing system appears to be a zone of intrusive hydrothermal breccias encapsulating mineralized quartz-molybdenite veins in a matrix of fine-grained leucocratic intrusives with associated quartz-feldspar dikes (Assessment Report 30632). Molybdenite mineralization at the Anticlimax A location occurs in thin to hairline quartz veinlets with some pyrite. Larger quartz veins 1 to 5 centimetres thick commonly contain pyrite, which may be accompanied by molybdenite, wolframite, bismuthinite and fluorite. In a few places, narrow zones of finely disseminated molybdenite alongside mineralized quartz veinlets in granite are present, but appear to be of very limited extent and erratic distribution. Mineralization in both intrusive phases is widespread but erratic. Apart from the small high-grade discovery occurrence, all mineralization found to 1970 was well below economic grade.

A biotite separate from unaltered granite of the Tintlhohtan Lake stock yielded a potassium-argon date of 102± 5 Ma (Geological Survey of Canada Paper 79-2). In the same study, sericite from an alteration envelope bordering a mineralized vein produced a date of 90.7± 3.3 Ma, indicating that the alteration and associated molybdenum-tungsten mineralization was genetically related to the host stock. These dates suggest that the Tintlhohtan Lake stock is part of the mid-Cretaceous Bayonne suite of intrusions, which is widespread in south eastern British Columbia, and is the focus of a study to assess its potential for plutonic-related gold mineralization (Fieldwork 2000).

Three claims, the Blue Jay, Whiskey Jack and Buckhorn were staked on the showing in April 1938 by Messrs. Reid and Loveway. These lapsed and the showing was restaked as the Anticlimax Group in May 1939 by C.A. Reid and Associates. During that summer, D.S. Tait and Associates of Vancouver optioned the claims, and some open cutting and stripping was done before the option was dropped later that year. In the fall of 1960, Gung Loy Jim and Associates staked 23 claims on the showings. Calder Molybdenum Company Limited optioned the property and staked an additional 117 claims. Work by the company in 1960 and 1961 included trenching and diamond drilling in three holes; a new molybdenite showing was discovered approximately 1.5 kilometres south of the original discovery. On the basis of the drill results, Bralorne Pioneer Mines took a 60 day option on the property in September 1961. The option was dropped later in the year. Rio Tinto Canadian Exploration Limited held the property in 1965. Work included geological mapping, a geochemical soil survey, an induced polarization survey, and bulldozer trenching. In 1966, Falconbridge Nickel Mines Limited optioned 42 claims in the Mo and adjacent claim groups from Gung Loy Jim and K. Calder. Work that year included 619 metres of AX diamond drilling in five holes, electromagnetic and magnetometer surveys, a geochemical soil survey over all claims, and a further 975 metres of diamond drilling (size unknown) in nine holes. Imperial Oil Limited held an option on the property in 1972 and 1973. Work included induced polarization and resistivity surveys over 13.0 line-kilometres, and 1183 metres of diamond drilling in three holes. Amax of Canada Limited held the property as the Hunch 1-5 claims (81 units) in 1980; work that year included a geochemical soil and silt survey (303 samples). The BC Geological Survey conducted a regional till geochemistry program over NTS map sheets 092P08W and 09W in 1999 (Open File 2000-17).

During 1999 through 2005, Newmac Resources Incorporated carried out programs of soil and rock sampling and trenching over the area as the Crazy Fox property, the results of which agreed with and elaborated upon earlier geochemistry work by Rio Tinto and Falconbridge. A 33-hole drill program was carried out in 2006, along with soil sampling and trenching. The program produced 7490 metres of NQ core displaying large continuous intersections of tungsten mineralization that coincided with fracture-controlled molybdenite mineralization. Several drill holes intersected a 3 metre section of 0.35 per cent molybdenum associated with unidirectional quartz comb texture developed in a convoluted fashion (also referred to as brain rock). Significant drill results from the program included a 42 metre section of 0.028 per cent molybdenum and 0.047 per cent molybdenite; a 6 metre section of 0.085 per cent tungsten, 0.107 per cent wolframite, 0.08 per cent molybdenum and 0.130 per cent molybdenite; and a 2.1 metre section of 3.910 per cent tungsten, 4.920 per cent wolframite, 0.048 per cent molybdenum, and 0.080 per cent molybdenite (Assessment Report 28838).

In 2007 and 2008, 13,331 metres of core were drilled and, using the core, a detailed fracture study of mineralized veins and fractures within the lower fault plate was carried out. Analysis of the core revealed a mineralized zone over 800 metres in length with a 430-metre intercept averaging 0.1 per cent molybdenum, including 157 metres averaging 0.29 per cent molybdenum (Assessment Report 30632). Further work in 2009 included geological and geochemical sampling programs and three drill holes totalling 610.2 metres, none of which intersected significant mineralization.

During 2010 through 2013, programs of rock and soil sampling, geological mapping and an induced polarization survey were completed on the eastern side of Lemieux Creek.

EMPR AR 1939-100; *1961-49; 1965-160; 1966-143
EMPR BULL 9, p. 20
EMPR FIELDWORK *2000 pp. 25,193-206
EMPR GEM 1969-231; 1970-312; 1972-321; 1973-176
EMPR OF 2000-17; 2002-15
EMPR PF (Workings plan 1939, 1"=100'; Hjerpe, D. (2006): Pictures of Crazy Fox Property; Core Samples of “Brain Rock” – Crazy Fox)
EMR MP CORPFILE (American Pacific Exploration Limited)
GSC MAP 1966-3; 1278A
GSC P 79-2, p. 17
CIM Special Volume 39 pp. 50-71
PR REL Newmac Resources Incorporated, Jul. 12, 19, 2006; Nov. 28, 2007; Jan. 7, 10, 28, Mar. 31, Apr. 24, 29, 2008