The Ample Gold Max property is a high grade and native gold with copper-silver property located 8 kms west of Lillooet, BC along and adjacent to Highway 99 South along Cayoosh Creek. This area has a long but intermittent history of gold prospecting which dates back to 1866 when the Chinese discovered placer gold along its lower reaches. These placers yielded a large amount of course free gold for which statistics cannot be found. It was generally conceded that the total amount went into the hundreds of thousands of dollars, even in the early years. Prospecting was carried out upstream to locate the source of this gold. In 1887 the first lode gold in bedrock was found above these placers. In 1897 the Golden Cache mine started production only to fail the following year. Some limited production was achieved in 1901. Prospecting for gold continued along the steep Cayoosh Creek canyon, but until the highway was built, access to the area was very difficult due to the rugged steep terrain.
OLD STAMP MILL ON CAYOOSH CREEK
THREE TRACK RAIL TO GOLDEN CACHE MINE
(The ore for the mill was free milling gold in quartz)
Total production recorded for the Golden Cache (Ample) between 1897 and 1901 was about 3,000 tons (2,722 tonnes) of ore (processed in a 10-stamp mill at Cayoosh Creek), which yielded 807 ounces (25,100g) of gold, or 0.26oz/ton (9 grams per ton)
This was also the only production recorded for the Cayoosh gold camp, according to Stevenson. This probably includes the amount mentioned in the annual report for 1901 (BC Minister of Mines 1902, p. 1,092), which reports that the company, Toronto-Lillooet Gold Reefs, Limited, ran their mill on Cayoosh Creek, treating 950 tons (862 tonnes) of ore with an assay value of $11.20, though this was only 50% of what they expected, and the company went bankrupt before it could improve the milling and recovery equipment.
The Bonanza Gold Max property has an established trend of mineralized zones along the Cayoosh Creek Fault for more than 3 kms. Many of the mineralized zones like the Ample–Goldmax and Bonanza Ridge zones display visible free gold and abundant sulphide lenses, along a strike length of showings over 1km in length. The old timers only mined the free gold and ignored the sulphide ore because of lack of processing facilities for this type of ore.
Supreme Resources drill hole AG-08-38, which was a "twin" to Homestake's hole AG 96-07 intersected 6.05m of strongly quartz-veined greenstone and graphite phyllite from 30.12m to 36.17m, accompanied by arsenopyrite, pyrite, and pyrrhotite. Visible gold was observed at two locations within the AG-08-38 drill core.
The Bonanza Gold Max property has returned gold values of up to 66.34 grams /tonne (2.13 ounces gold /tonne).
Some previous drilling results by Homestake and Gold Ore are in the following table:
|Drill Hole #||From (m)||To (m)||Intercept (m)||Grade (g/t)|
The Ruby zone yielded 8 g/t Au over 3 metres. Gold has been located in four other zones called the Wedge, Red Ledge, C-Zone and Fillion zones. These zones have had very little, to no modern exploration.
Gold-bearing quartz veins are reported throughout this area, from Lillooet to Bralorne, perhaps the most famous of the past producers. The Bralorne - Pioneer Mine produced 4.1 million ounces of gold from 8 million tons of quartz vein ore between 1897 and 1971 (Christopher 2002).
Near Bralorne, the Minto deposit was hosted by quartz-carbonate veins with many sulphides, as well as gold. The Wayside property was also a former producer with massive quartz veins carrying various sulphides and free gold.
“Gold mineralization is in mesothermal, epigenetic native gold-bearing quartz veins, gold arsenopyrite sulphide zones, and also disseminated within other rock types, associated with faulting and fold structures in Cayoosh Assemblage metasedimentary rocks below the Bridge River complex greenstones and cherts
The Ample– Goldmax zone is at least 200 m wide and 200 m down dip and open to the west and northeast.
Lower grade, bulk tonnage gold deposits have not yet been investigated for the Ample-Goldmax area, but are definitely something to explore for. In addition, most of the gold-bearing quartz veins prospected has come from metasedimentary rocks; Stevenson suggested prospecting also within the greenstones due to their greater competence in hosting more continuous vein structures.
New logging roads, now provides good access to these high potential areas of the claims.
The Bonanza Goldmax Property is known to host several (At least ten) known mineralized zones, primarily hosting native gold with or without sulphides in mesothermal quartz vein stockworks, gold and various amounts of silver in sulphide zones, and possibly lower grade bulk tonnage disseminated type gold.
The Bonanza Ridge vein and structure has been traced for over 1.5Km along strike. Numerous other veins in the area have seen little to no exploration to date.
Portals to the old workings occur below and above Highway 99 and are accessible via an old foot trail.
Historical mine workings, consisting of a few old adits and drifts, are located at the Ample Mine (eight underground workings were mapped by Homestake) and Bonanza Ridge areas of the property, as well as on the Golden Cache (Golden Eagle .
There are no known significant waste deposits, tailings ponds, or recent improvements.
Descriptions of Ample mine workings are detailed in a report for Homestake Canada Inc. by Kuran and McLeod (1997)
Bridge Zone (New Discovery)
The Bridge Zone, located on the south side of Cayoosh Creek about 1.7 kilometres southwest of the Ample Mine, comprises quartz veins cutting arsenopryrite rich phyllite of the Cayoosh Assemblage in the footwall of a shallow fault. A feldspar porphyry dyke is exposed nearby. The zone is at approximate UTM coordinates 566468 east and 5610562 north.
Access to the zone is by trail starting at the main highway and trending southwest. Mineralization, as exposed in three hand trenches, consists of pyrite, chalcopyrite and arsenopyrite with weak sericite alteration. Mineralized developed quartz breccia and quartz stockwork occur over approximately 1.0 meter. The mineralization strikes approximately easterly. The true width and strike length of the zone are masked by deep overburden. Samples collected from the zone by Homestake geologists returned up to 2.6 g/t Au.
Further follow-up prospecting and sampling is highly recommended.
The Ample Mine
At the Ample Mine, located in the Ample claim about 750 metres west of the Ample/Goldmax Zone, gold mineralization occurs in quartz veins up to 40 metres long and 3 metres wide hosted generally within diorite at the footwall to the Cayoosh Creek Fault and its splays (Figure 4, Map 1). The mineralization strikes easterly and dips shallowly to the north (Kuran and McLeod, 1997a). Eight production and exploration drifts totaling about 300 metres have been driven on the lower of two mineralized zones.
Kuran and McLeod (1997a) report that grab samples from the mine area returned up to 118 grams/tonne Au and surface chip samples up to 6.9 grams/tonne over 3 metres. They also report that gold mineralization found associated with disseminated and stringer arsenopyrite hosted by phyllic diorite?? assayed up to 6.1 grams/tonne. Arsenopyrite bearing mineralization in silica flooded chert? at the silicified diorite/phyllite contact returned assays up to 68.6 grams/tonne Au.
An upper zone of mineralization in the Ample Mine area is hosted by phyllite. In this zone, 0.3 to 1.5 metres wide discontinuous quartz veins containing disseminated arsenopyrite and local small pyrite pods carry anomalous gold generally less than 1 gram/tonne but up to 2.7 grams/tonne (Kuran and McLeod, 1997a).
Gold-Ore Resources Ltd. carried out rock and channel sampling on two of the Ample Mine adits during August of 1998 (Table II; Figures 10 and 11). Channel sampling carried out across quartz veins and stockwork developed in intermediate intrusive rocks and lesser graphitic argillite in Adit #3 returned strongly anomalous to high grade gold to a maximum of 9.19 g/t over 1 m. Near the entrance of Adit #7, quartz veining is developed in both phyllitic mudstone of the Cayoosh Assemblage
A chip sample from the arsenopyrite-bearing dyke returned 16.1 g/t Au
Most mineralized zones are associated with the Cayoosh Creek thrust fault, which has emplaced greenstone and chert of the Bridge River complex over phyllitic metasedimentary rocks of the Cayoosh Assemblage, causing subsidiary structures and dilatant quartz veins mainly in the footwall.
Extending for 3km along this fault from the Golden Cache to the Ample-Goldmax Zone are several known areas of mineralization including the Wedge Zone, Whale, Ample Mine, Cougar (also known as the Cougar-Ample Thrust), Red Ledge, and Ample-Goldmax A, B, and C (and extensions including the C-Zone and Fillion Zone, and the Ruby Zone, as named by Kuran and McLeod 1997
Gold mineralization on the property occurs in structurally controlled mesothermal quartz veins and disseminated sedimentary-rock-hosted gold systems. Dilatent zones straddling the Cayoosh Creek Fault are particularly favourable hosts for gold mineralization. Discontinuous high-grade native-gold bearing quartz veins occur up to two metres in width where maximum brittle faulting occurs along the fault particularly within diorite sills and dykes.
Low grade gold-bearing quartz stockwork and disseminated arsenopyrite occurs over zones of two to five metres wide in the incompetent phyllitic Cayoosh Assemblage rocks adjacent to the fault. Kuran and McLeod (1997a and b) state that mineralization along the Cayoosh Creek Fault can be traced from the Ample/Goldmax Zone westward through the Ample Mine and Wedge showings to the Golden Cache, a strike length of 3 kilometres Long, thick, high-grade gold-bearing quartz veins occur within diorite intrusions in the area of the Ample Mine and to a lesser extent in the Ample/Goldmax Zone.
Lower Bonanza Zone
The Lower Bonanza Zone is located just off and below the main highway at approximate coordinates 565823 east and 5610921 north. Access to the zone is by trail starting at the main highway and trending northeast for about 70 meters. The mineralization occurs within moderately folded argillites and phyllitic mudstones of the Cayoosh Assemblage.
Mineralized quartz lenses to boudins and some quartz breccia occur sheeted within the metasediments. The mesothermal veins and veinlets occur along fault and shear zones within the metasedimentary rocks. They dip gently to the north-northeast (25 degrees). Pinching and swelling of the veining is common.
Individual veins and veinlets range up to 0.1 - 0.5 meters in width, and some veins and veinlets are mineralized with trace pyrite, chalcopyrite(?), and trace to 10 % arsenopyrite. Secondary minerals include limonite, and trace mariposite. Wallrock alteration includes sericite, silicification, and scorodite.
One continuous chip sample was taken over a one-meter width and returned 25.3 g/t gold. Two grab samples of a quartz breccia returned gold values of 2.8 g/t and 6.02 g/t respectively.
Middle Bonanza Zone
The Middle Bonanza Zone is located at the base of a cliff on the west side of a ridge approximately 100 meters below the Upper Bonanza Zone at approximate coordinates 566090 east and 5610495 north. Access to the zone is by steep trail starting at the main highway and trending toward the southeast. Gold mineralization occurs at the contact between Cayoosh Assemblage phyllitic mudstones and overlying cherty argillites of the Bridge River Complex. Mineralized quartz lenses and boudins occur in both the phyllitic mudstones and the cherty argillites.
The mesothermal veins occur along fault and shear zones. They dip moderately (30 to 40 degrees) to the northeast (30 to 65 degrees). Pinching and swelling of the veins is common in the zone with individual veins ranging up to 0.30 meter thick. Sulphide mineralization includes traces of pyrite and arsenopyrite, secondary minerals include traces of limonite and hematite. Wall rock alteration is characterized by silicification and weak sericitization. An adit is located at the south end of the zone where a narrow quartz vein is offset by a fault trending 25 degrees and vertical. The left lateral offset of the vein was measured to be approximately 1.2 meters.
Upper Bonanza Zone
The Upper Bonanza Zone is located on the west side of Bonanza Ridge. Access to the zone is by helicopter or by a steep trail starting at the main highway and trending toward the southeast. A helicopter pad was constructed just east of the zone. The potentially economic gold mineralization occurs within strongly foliated and or bedded, fine grained, chloritic, tuffaceous(?) phyllites of the Bridge River Complex. Bedding and/or foliation developed within the phyllite dips gently (25 to 30 degrees) generally to the northeast (25 degrees). The phyllites have been recumbently folded about fold axes that plunge gently to the northwest at the north end of the zone and about 3 degrees to the southeast at its south end.
The mesothermal veins occur along fault and shear zones developed within the phyllites, locally flanked by feldspar porphyry. The veins pinch and swell and, in places, are boudinaged. They dip moderately (31 to 49 degrees) toward the northeast (approximately 50 degrees). Folding at one location has changed the dip of one vein from a shallow dip to the NE to a near vertical dip and plunge. Individual veins range up to 0.9 meters in width and are either barren of sulphides or contain minor amounts of pyrite, chalcopyrite and/or arsenopyrite. Visible gold is noted locally.
Secondary minerals include limonite and traces of mariposite. Wallrocks adjacent to the veins are typically chloritized, sericitized and/or silicified. The alteration generally extends only a few centimetres into the wall rock. The mineralized veins have been traced discontinuously for about 105 m and are open to the south and down dip to the northeast.
Significant results from hand trenching and chip-channel sampling across the veins at various locations along the Bonanza Ridge zone include:
7.7 grams/tonne (g/t) over 2.9 metres (m) from Trench #l at the northwestern extremity of the zone; 7.4 g/t over 1.7 m from a trench located 10 m to the southeast of Trench #1; 8.7 g/t over 1.6 m from a trench 40 m southeast of Trench #l and 37.4 g/t over 1.5 m from a trench about 62 m southeast of Trench #l.
A gold-in-soil anomaly about 120 m long and 50 m wide, which occurs in the area of the surface mineralization, extends to the southeast in an overburden-covered area upslope from the showings
The gold anomaly is defined by samples that returned greater than 200 ppb Au - to ~1,000 ppb (1gpt) Au in soil.
A shallow shaft was excavated on the Bonanza Zone probably in the late 1800’s when lode gold mining was carried out at other locations in the area. This zone has never been drill tested.
The Bonanza-Goldmax Property hosts numerous zones of high-grade native gold-bearing quartz veins. Plus gold associated with sulphides such as arsenopyrite, and prospective quartz-carbonate-silica mariposite alteration zones.
These gold showings are located mainly along a 3 to 4km extent of the Cayoosh Creek Fault and the area below it in Cayoosh Assemblage rocks.
Complete delimitation of mineralized zones along this trend has never been done, although exploration and drilling have suggested the presence of multiple gold-bearing mineralized zones.
All areas previously worked on are open to potential expansion and new discovery.
The Bonanza Goldmax claim area demonstrates an excellent exploration target in the search for an economic deposit of Gold with associated Silver and Copper.