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Twenty-One Silver-Gold Project, Mineral County, Nevada
The Twenty-One Silver-Gold Project, totaling approximately 420 acres is located in Mineral County, approximately 100 miles southeast of Carson City, Nevada. The property sits 3 miles south of the pavement of US Highway 95. Access to the property is by dirt track roads. The Twenty-One Silver-Gold Project consists of two blocks of lode claims centred on an area of outcropping. High voltage power lines run along highway 95 providing excellent infrastructure to the project area.
Chip sampling of exposed quartz breccia veins returned assay values from 211 g/t (6.5 ounces) silver to 1141 g/t (34.5 ounces) silver and up to 2 g/t gold. The vein breccias occur within a parallel series of east-northeast trending faults which cut a 1312 foot X 1640 foot zone of altered, hydrothermal, quartz matrix breccia. High lead, arsenic, zinc, bismuth and tellurium values accompany the sampled mineralization. Andesitic and rhyolite sills, plugs, and dikes occur on the Twenty-One Silver-Gold property. The mid-Miocene age intrusive activity in this district is considered to be highly favorable for the existence of both epithermal precious metal veins and related mineralization within carbonate wall rocks.
Age dating of these intrusive rocks in the immediate area shows 17 to 19 million years before present timing (mid Miocene). This mid Miocene age intrusive activity is considered to be highly favorable for the existence of both epithermal precious metal veins and related mineralization within carbonate wall rocks due to the presence of other districts in the region of that age. The alignment of major Miocene age gold and silver deposits along the northeast trending zone is dramatic and strongly suggests a robust structural link between the deposits.
Similar settings occur at other mining districts in the region. These districts include Tonapah, Paradise Peak and Santa Fe, which have a combined production of approximately 4 million ounces of gold and 500 million ounces of silver.
The high-grade mineralization, alteration and host rock units on the Twenty-One Silver-Gold property are very similar to those found at the Santa Fe gold-silver deposit located 10 miles along a regional scale, mid Miocene age mineral trend to the north-northeast. The Santa Fe mine was mined by Corona and Homestake and produced approximately 450,000 ounces of gold and 700,000 ounces of silver from 10 million tons of near surface oxide ore in the late 1980's and early 1990's. A sulfide phase precious metal reserve remains in the Santa Fe Mine below the level of oxide ore mined.
The exploration target at the Twenty-One Silver-Gold Project is 10 to 40 million tons of near surface silver-gold and base metal mineralization hosted in Triassic age limestones, quartz veins and hydrothermal breccias. The project exploration target is robustly supported by reconnaissance exploration results on the property to date. Additionally, district scale mapping of the area in 1985 by the Nevada Bureau of Mines indicates that limestone units occur at shallow depth beneath both the high-grade Ag-Au veined breccia zone and at shallow depths in the pediment area where the jasperiod boulders and high-grade vein breccia float have been found.
The documented occurrence of the reactive limestone beneath the bonanza grade veins and breccia cap, together with the occurrence of mineralized, silica replacement of limestone (jasperiod) strongly suggests that large-scale, limestone hosted precious and base metal mineralization occurs at shallow depth on the property.
| Twenty-One Silver-Gold Breccia Cap Click to Enlarge  |
Twenty-One Silver-Gold Mineralized Jasperoid Click to Enlarge  |
A geophysical work program on the Twenty-One Silver-Gold claims started January 2012. A grid has been established on the Twenty-One claim group and a detailed magnetometer survey consisting of approximately 25 to 30 line miles.
The detailed magnetic data being collected will enhance known drill targets on the Twenty-One property. Further mapping and rock sampling will also be carried out. The company anticipates a reverse circulation drill program of approximately 1500 -- 2000 metres to follow compilation of data in February 2012.
This survey will add specific geophysical information for the detailed targeting of magnetite alteration within carbonate host rocks. The carbonate rocks lie below a silicified and brecciated cap unit which is cut by a series of parallel quartz veins containing very high grade silver-lead-gold mineralization.
The target of the Cypress exploration program are silver-gold rich, base metal bearing carbonate replacement deposits and or skarn type mineralization hosted within Triassic age carbonate rocks. The property covers the contiguous E-NE extension of silver and gold mineralization mined at the Mindora deposit. It is further reported that molybdenum mineralization within felsic intrusive rocks was encountered in deeper holes drilled at Mindora.
The Twenty-One property lies along a NE trending corridor which contains both pre- Tertiary silver and base metal mineralization as well as Tertiary age gold-silver mineralization. Significant production has occurred at the Santa Fe Mine located 15 miles NE of the Twenty-One property. Advanced exploration for porphyry molybdenum and copper has occurred between Cypress's Twenty-One and the Santa Fe properties.
Robert Marvin, P.Geo., CPG, Project Geologist for Cypress Development is the Qualified Person as defined by National Instrument 43-101 and supervised both the project field exploration and the preparation of the technical information on this website.
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