Description

Location: The Martin Hotel, 94 W. Railroad St.

Contact: nancyjeanw@aol.com

Meeting Date:  Wednesday, October 12, 2022

Meeting Location:  The Martin Hotel, 94 W. Railroad St.

Meeting time: 6 pm for appetizers and beer

Talk time: 7 pm

 Speaker: Mark Travis, Vice President of Exploration, Nevada Silver Corp.

 Title:  “Corcoran Canyon Silver Project, Northern Nye County, NV”

Food and Drink Sponsor:  JENTECH DRILLING SUPPLY

 Abstract:

The Corcoran Canyon silver project is located on the Eastern-flank of the Toquima Range of Central Nevada along the Northumberland – Tonopah Gold-Silver Belt.  Initial exploration of the Corcoran Canyon area began in 1970 with Echo Bay Exploration’s involvement in the late 1980’s.  Corcoran Canyon is a low-sulfidation epithermal silver-gold deposit hosted in Tertiary felsic volcanics of the Toquima Caldera Complex (TCC).  The system is hosted along a caldera margin and structural corridor in quartz-adularia-sulfide veining, stockwork, and breccia accompanied by intense quartz-sericite-pyrite alteration.  The TCC is a series of nested calderas, dated from 27.7 – 22.1 Ma, including the Moores Creek (27.2 Ma), Mount Jefferson (26.4 Ma), & Trail Canyon (23.6 Ma) tuffs.  The Silver Reef Zone (SRZ), the primary zone of mineralization, hosted within the Corcoran Canyon Tuff, dated 28 Ma, pre-dates the TCC.  The SRZ, with a current resource estimate of 40 Moz AgEq of oxide silver ores located at surface, is open laterally and at depth.  The Corcoran Canyon hydrothermal alteration window consists of 12 square-kilometers across several favorable host rocks including the Corcoran Canyon & Trail Canyon tuffs as well as three types of felsic intrusive units and a megabreccia associated with the caldera collapse.  The alteration window is progressively zoned inward with distal quartz-chlorite thru quartz-chlorite-sericite to intense quartz-sericite alteration proximal to mineralization.  Principal control to mineralization is the margin of the Trail Canyon caldera along the Master Fault, dipping North-West, as well as other splays within the structural corridor.  Age of mineralization is constrained between 27.7 – 22.1 Ma, coincident with Trail Canyon caldera activity within the TCC.  Bonanza grades at Corcoran Canyon reach up to 6,769 g/t Ag and up to 8.4 g/t Au along feeder zones and intense quartz-adularia-pyrite veining and stockwork.  Vein mineralogy in stockwork and breccias includes pyrite and Ag-Cu-Sb-As sulfides and sulfosalts in a gangue of quartz, calcite, adularia, siderite, and barite with secondary silver mineralization of cerargyrite, native Ag, and Ag-jarosite.  Other volcanic hosted deposits in the area include: Round Mountain, Gold Hill, Jefferson, Manhattan, Baxter Springs, Midway, & Tonopah.  Current exploration at Corcoran Canyon looks to expand upon known resource as well as apply the same mineralization model to nearby deposits within favorable host rocks.

Details

10/12/2022 18:00:0010/12/2022 20:30:00America/Los_AngelesGSN Winnemucca Chapter MeetingMeeting Date:  Wednesday, October 12, 2022 Meeting Location:  The Martin Hotel, 94 W. Railroad St. Meeting time: 6 pm for appetizers and beer Talk time: 7 pm  Speaker: Mark Travis, Vice President of Exploration, Nevada Silver Corp.  Title:  “Corcoran Canyon Silver Project, Northern Nye County, NV” Food and Drink Sponsor:  JENTECH DRILLING SUPPLY  Abstract: The Corcoran Canyon silver project is located on the Eastern-flank of the Toquima Range of Central Nevada along the Northumberland – Tonopah Gold-Silver Belt.  Initial exploration of the Corcoran Canyon area began in 1970 with Echo Bay Exploration’s involvement in the late 1980’s.  Corcoran Canyon is a low-sulfidation epithermal silver-gold deposit hosted in Tertiary felsic volcanics of the Toquima Caldera Complex (TCC).  The system is hosted along a caldera margin and structural corridor in quartz-adularia-sulfide veining, stockwork, and breccia accompanied by intense quartz-sericite-pyrite alteration.  The TCC is a series of nested calderas, dated from 27.7 – 22.1 Ma, including the Moores Creek (27.2 Ma), Mount Jefferson (26.4 Ma), & Trail Canyon (23.6 Ma) tuffs.  The Silver Reef Zone (SRZ), the primary zone of mineralization, hosted within the Corcoran Canyon Tuff, dated 28 Ma, pre-dates the TCC.  The SRZ, with a current resource estimate of 40 Moz AgEq of oxide silver ores located at surface, is open laterally and at depth.  The Corcoran Canyon hydrothermal alteration window consists of 12 square-kilometers across several favorable host rocks including the Corcoran Canyon & Trail Canyon tuffs as well as three types of felsic intrusive units and a megabreccia associated with the caldera collapse.  The alteration window is progressively zoned inward with distal quartz-chlorite thru quartz-chlorite-sericite to intense quartz-sericite alteration proximal to mineralization.  Principal control to mineralization is the margin of the Trail Canyon caldera along the Master Fault, dipping North-West, as well as other splays within the structural corridor.  Age of mineralization is constrained between 27.7 – 22.1 Ma, coincident with Trail Canyon caldera activity within the TCC.  Bonanza grades at Corcoran Canyon reach up to 6,769 g/t Ag and up to 8.4 g/t Au along feeder zones and intense quartz-adularia-pyrite veining and stockwork.  Vein mineralogy in stockwork and breccias includes pyrite and Ag-Cu-Sb-As sulfides and sulfosalts in a gangue of quartz, calcite, adularia, siderite, and barite with secondary silver mineralization of cerargyrite, native Ag, and Ag-jarosite.  Other volcanic hosted deposits in the area include: Round Mountain, Gold Hill, Jefferson, Manhattan, Baxter Springs, Midway, & Tonopah.  Current exploration at Corcoran Canyon looks to expand upon known resource as well as apply the same mineralization model to nearby deposits within favorable host rocks.Reno, NV
Event StartsEvent Ends
10/12/202210/12/2022
All Day Event
6:00pm8:30pm