• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
United States
Soledad Mountain Mine

This page is not tailored to
devices with screen width under 750 px.
 Location:
8 km S from Mojave, California, United States

  Address:
15772 K St
PO BOX 1030
Mojave
California, United States
93502
Phone  ...  Subscription required
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in United States
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2031
Mines production numbers have not been publicly available since Golden Queen Mining Co. Ltd. completed the sale of its subsidiary Golden Queen Mining Holdings Inc., which holds 50% ownership interest in the Soledad Mountain mine. The group of purchasers including Thomas M. Clay and certain members of the Clay family and associated entities have acquired 100% of the shares of Golden Queen Mining Holdings Inc. (The Transaction on May 22, 2019)


Owners

Source: p. 165
CompanyInterestOwnership
Auvergne LLC 14.75 % Indirect
Jefferies Financial Group Inc. 35.25 % Indirect
Thomas M. Clay 50 % Indirect

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Vein / narrow vein
  • Epithermal


Summary:

The Soledad Mountain gold-silver deposit is best interpreted as a volcanic rock-hosted, low sulfidation, epithermal vein system of the low base metal type. Individual major veins formed by episodic deposition of quartz, adularia, sericite, calcite, and sparse sulfide minerals in open faults and fractures, coeval with adjacent sheeted and quartz-vein stockwork zones and quartz ±adularia ±sericite alteration of nearby wall-rocks. Other examples of this deposit class include districts such as Oatman (Arizona), Bullfrog (Nevada), Bodie (California), and Tayoltita (Mexico). Soledad Mountain contains an unusually large number of individual veins within a relatively small area by comparison to the examples cited. Post mineral faulting at Soledad Mountain has extensively sheared and brecciated the veins, most likely due to mid-Miocene to present-day wrench-fault tectonism between the nearby San Andreas and Garlock fault systems.

Gold and silver mineralization at Soledad Mountain occurs in a swarm of mainly northweststriking, subparallel to anastomosing, low-sulfidation, epithermal quartz veins that formed in faults and fractures within the Miocene rhyolitic volcanic units. Over 20 gold silver veins and related vein splits have been identified and modeled as part of the project resources. Veins generally strike N40°W and dip at moderate to high angles to the northeast and to the southwest, and occur in parallel and, locally, en echelon patterns over a total strike-length o ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

Today, the mining is done by open pit surface mining techniques requiring large equipment to excavate the mine in 20 foot benches. During this process, the drifts, tunnels and stopes from the previous underground mining will be encountered requiring precautions to be taken to avoid an unplanned collapse of underground workings.

The bench is divided into blocks or patterns. Drill patterns are designed and drilled on a certain spacing (i.e. 14’X14’, 16’X16’, etc.) to enable accurate sampling of the material being drilled. Since we mine 20’ benches, each hole is drilled to a predetermined depth, usually 23’ to ensure the bench is completely blasted. The cuttings from each drill hole are sampled to determine if that hole is ore (pay dirt) or waste. Once a pattern has been completely drilled, the holes will be loaded with a booster and ANFO (ammonia nitrate fuel oil) and capped with stemming. When all the drill holes have been filled, the loaded holes will be tied together and blasted.

The material is loaded into 100-ton haul trucks. The drivers receive the material type information by way of a computerized dispatching system and delivers the material to the appropriate destination. Waste material is placed on a dump outside the pit limits and ore (pay dirt), is delivered to the Primary Crusher to be either direct dumped in the crusher or stockpiled.

The rock mined to expose ore will be placed at its angle of repose with final composite slopes not ........


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits201820172016
Gold oz 42,28246,19919,030
Silver oz  ......  Subscription required  ......  Subscription required  ......  Subscription required
All production numbers are expressed as metal in doré.
Subscription required - Subscription is required.

Operational Metrics:

Metrics201820172016
Ore tonnes mined 4.51 M tons3.76 M tons2,578 k tons
Waste 13 M tons14.5 M tons6,282 k tons
Stripping / waste ratio 2.9 3.9 2.4
Tonnes processed 3.52 M tons3.55 M tons2,666 k tons
Total tonnes mined 8,860 k tons
Daily processing rate 7,410 tons

Reserves at December 31, 2018:

CategoryTonnage CommodityGradeContained Metal
Proven & Probable 39,927 tons Gold Equivalent 0.0236 oz/ton 941,193 oz

Commodity Production Costs:

CommodityUnits201820172016
Credits (by-product) Gold USD -184 / oz  
Total cash costs (sold) Gold USD 1,251 / oz  
Total cash costs Gold USD 997 / oz†   1,136 / oz†  
Total cash costs (sold) Gold USD 998 / oz†   1,140 / oz†   1,067 / oz†  
All-in sustaining costs (AISC) Gold USD 1,215 / oz†   1,556 / oz†   1,330 / oz†  
† Net of By-Product.

Operating Costs:

Units20182017
Total operating costs ($/ton milled) USD 18.815.9

Financials:

Units201820172016
Revenue M USD 58.4   62.1   27.2  
Operating Income M USD 4.1   -6.1   -1.9  



Proposed Heavy Mobile Equipment as of February 25, 2015:
HME TypeModelSizeQuantity
Dozer ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required
....................... Subscription required ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2022
....................... Subscription required ....................... Subscription required Subscription required Oct 5, 2022
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2021
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2019
Form 10-K 2018
Corporate Presentation 2017
Form 10-K 2017
Corporate Presentation 2016
Form 10-K 2016
Feasibility Study Report 2015
Form 10-K 2015
Subscription required - Subscription is required.

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2023 MDO Data Online Inc.