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Post-Mineral Dike Rocks - Felsite dykes occur within the Owl Zone and along the east side of
Skip Creek Valley. The common occurrence of such small intrusions in the very small areas of
exposed rock suggest a large number of dykes are present, probably as dyke swarms. The
felsites can be readily identified by a pale grey colour, a fine grained texture and, above all, a
chalk-like surface appearance. A general similarity with some Ootsa Lake Group tuffs suggest
the dykes are of Eocene age. A few dykes of black basalt and grey hornblende porphyry occur
with the felsite in both locations and are also considered to be of the Eocene age. None of the
above dykes show any sign of sulphide mineralization or quartz veining which is consistent with
a supposed post-mineralization age.
Ootsa Lake Group - Within the Property, these volcanic rocks are considered to form a thin
cover over the older rocks. As such, they mark the present position of a pre-Eocene erosion
surface. The high ground at the southwestern corner of the map area is underlain by a
sequence of grey volcanic tuffs and other pyroclastics. The rocks observed are pale grey tuffs of
probable rhyolite to dacite composition.
M
INERALIZATION
Within the Cordillera of western North American, Endako is the oldest significant porphyry
molybdenum deposit, at ~145 Ma and it is the largest mined granodiorite type molybdenum
deposit (Whalen et al, 2001). Mineralization occurs in two distinct vein types, including
stockwork veins with minor molybdenite and ribbon-textured veins that contain the majority of
the molybdenum in the deposit. Three distinct alteration assemblages are recognized. The
earliest includes K feldspar selvages, locally with hydrothermal biotite. Sericite alteration
includes quartz-sericite-pyrite envelopes, primarily on the stockwork veins but also on the ribbon
veins. Finally, late stage, low temperature kaolinite alteration is evident throughout the Endako
phase granodiorite.
On the Property, two areas of molybdenite mineralization have been defined in limited surface
exposures and with percussion drilling. The largest of these is the Gel Zone which lies in the
southeast part of the Property east of Skip Creek. It has been defined by a line of eight
percussion drill holes. The second area lies in the southwest quadrant west of Skip Creek and,
in reference to earlier work, has been called the Owl Zone. It has been defined by three
percussion holes drilled near two areas of surface quartz-molybdenite mineralization (Bysouth,
2008). Depth continuation was confirmed in both areas.
Mineralization in road cuts at the Owl Zone consists of a quartz-molybdenite vein system in
Casey quartz monzonite which has been hydrothermally altered to white kaolinite, greenish
sericite and red secondary K-feldspar (Bysouth, 2008). To the north, quartz-molybdenite veins
occur in Takla andesite near contacts with Casey quartz monzonite. At the Gel Zone, bleached
and pyritized Casey quartz monzonite occurs associated with quartz veining, chlorite stock
works and minor molybdenite in hairline fractures. Minor amounts of hematite occur in all the
known showings, mainly as hairline fracture fillings without gangue.
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EXPLORATION HISTORY
The first modern exploration in the vicinity of the Xama property occurred in the mid 1960’s as
part of the porphyry exploration boom in British Columbia and in particular in response to the
discovery of the Endako ore body and its development by Placer Development Ltd. as a large
open-pit molybdenum mine Endako molybdenum mine, 21 km northwest of the Property.
The Owl and Bee claims (Minfile 93F 019) were staked by Anaconda American Brass Ltd. in
1967 and 1968, in what is now the eastern portion of the Property. Soil and stream sediment
surveys, including 262 mainly B soil horizon samples collected on 200 m by 130 m centres,
detected poorly defined copper and molybdenum anomalies (Brown & Macrea, 1966; Hirst,
1968A). An IP survey was conducted later in the summer (Hirst, 1968B), with follow-up IP in
1969 (Macrea & Conto). Only weakly anomalous chargeability zones were observed.
During the same period, Amax Exploration Incorporated‘s staked the Counts Lake property
(GEL claims – Minfile 93F 020), in the eastern portion of the Property, to cover anomalous silt
and water samples over a magnetic low, with associated minor disseminated copper and
molybdenum mineralization in float samples. In 1967, Amax completed 15.4 km of IP surveying
over the claim group (Sutherland and Hallof, 1967) which detected weak chargeability. A 35 line
km soil survey outlined a 750 by 1,500 m area with Mo values greater than 10 ppm and bands
of anomalous Cu in the 100 to 650 ppm range. 2,700 m of tractor trenching was also carried
out.
Mercury Explorations Limited acquired the Count claims in 1968, along the north side of Amax’s
Counts Lake property, and conducted 38.4 km of IP surveying (Chaplin, 1969). The survey
detected a weak, 2,100 by 300 m east-northeast trending chargeability anomaly. A five hole drill
program was recommended.
In 1970, Taurus Exploration Corporation carried out a soil geochemical survey over the “I” claim
group, in the north-central portion of the Property. Samples were taken at 61 m intervals over
39.5 km of grid. Discontinuous zones of anomalous Mo values were noted, particularly in the
northwestern part of the grid.
Also in1970, Cyprus Exploration Corporation, Ltd. acquired a very large group of mineral claims
to the northeast of XAMA. The scope and results of their work is not well known as there was
little to no public disclosure.
In the mid 1070’s, due to a downturn in mineral exploration in British Columbia, drill holes that
had been recommended on the Property were never drilled.
In 1990 and 1991, Escondido Exploration Corporation acquired the Skip and Ven claims over
the historical Anaconda, Amax and Mercury properties and completed a compilation of the prior
exploration work (Chapman, 1991). They conducted reconnaissance prospecting, soil sampling,
VLF-EM and self-potential (SP) surveys.
In 1996, G. W. Kurz acquired the Hen claim over the Amax exploration target area from 1967-68
and completed 760 m of SP surveying (Kurz, 1996). The survey defines a weak anomalous
north-northeast trending zone that might indicate weak underlying sulphide mineralization.
In 2005, Kurz acquired the Skip claim over the main Anaconda-Amax target area and, in 2006,
completed a reconnaissance geochemical survey of 85 soil and silt samples and 4 rock samples
(Bysouth, 2006). The survey defined two composite metal anomalies, suggesting a porphyry