Projects

Overview

Mineral Mountain is an early stage Laramide age porphyry copper exploration property covering 4,905 acres in the Mineral Mountain District, Pinal County, Arizona.  The Laramide copper province hosts a substantial number of large copper-molybdenum mines and deposits in Arizona, a mining friendly; politically secure jurisdiction with excellent and readily accessible infrastructure.

Regional Setting: 
The Mineral Mountain project is located in the same stuctural trend that hosts the Globe-Miami, Resolution, Florence and Casa Grande copper deposits (see table below). The project is located between the Florence copper deposit to the west and the Resolution copper deposit to the east.

District tonnes copper (%) contained copper (lb)
Globe-Miami 1,594,000,000 0.64 22,484,326,400
Resolution 1,624,000,000 1.47 52,615,651,200
Florence* 490,000,000 0.33 3,234,000,000
Casa Grande* 740,000,000 0.90 14,678,640,000

*In-Situ Leach (“ISL”) project, only oxide portion of the deposit.

The porphyry copper deposits in the Globe-Miami & Resolution deposits are reported to contain significant concentrations of molybdenum. Laramide age intrusive rocks and their associated country rocks hots the majority of porphyry copper deposits in Arizona.

 
The Mineral Mountain project occurs on the flank of coincident positive regional scale magnetic and gravity anomalies and inproximity to a Range Front Fault features similar to other Laramide age porphyry copper deposits in Arizona The western boundary of the Mineral Mountain project is interpreted to be a Range Front Fault as indicated by the rapid increase (500m) in depth to bedrock over a short distance as suggested by drilling.


Project Geology:

The project is underlain by Precambrian Pinal schist, diabase and granite that have been intruded by Laramide age quartz monzonite and granodiorite stocks.  The Quartz Monzonite dips to the east under the Precambrian rocks and is intruded by late stage aplite, aplite-pegmatite, hornblende dacite and porphyritic dikes (30% phenocrysts).  

The structural fabric of the property consists of a prominent west-northwest trending “graben” type structural zone and a series of ENE and NS trending dikes and faults.  The graben type feature crosses the north-central portion of the property and marks the northern extent of the Laramide age Quartz Monzonite and porphyry style alterations. The early ENE trending dikes are offset by later North-South faults some of which have been intruded by late stage dikes. Both Miocene age precious metal fissures and high sulfidization fissure vein systems related to the Laramide intrusive event occur in the Precambrian rocks north of the Laramide intrusives.


Exploration Target:

Exploration activities between 2015 and 2018 located two large areas of porphyry style copper-molybdenum-gold mineralization hosted in Laramide age quartz monzonite and granodiorite and Precambrian age rocks. 

  • Bedrock mapping and sampling completed between 2015 and 2018 located approximately 600 copper showings in two areas of the property.  The first area in underlain by Laramide age intrusive rocks.  The second area is located southeast of Area 1 and is hosted in Precambrian age granite, diabase, Pinal Schist and in Tertiary age granodiorite dikes.  
  • Area #1 measures 4,500m long by up to 2,000m wide and is open to extention to the south, Area#2 measures 2,800m long and averages 400m wide.
  • Area #1 hosts three zones of disseminated copper-molybdenum mineralization the largest of which measures approximately 1,000m long by 350-450m wide.
  • In Area #1; the higher concentrations of molybdenum are associated with the largest zone of disseminated copper mineralization which coincides with a large, positive chargeability anomaly outlined in 1971.
  • Area #1 is characterized by disseminated, quartz vein and fracture styles of copper mineralization with significant molybdenum concentrations.
  • Area #2; is characterized by quartz vein and fracture hosted copper mineralization with significantly lower concentrations of molybdenum than recorded in Area #1.

Geological Model:

The geological model for the project suggest two porphyry centers exposed at different levels. The Quartz Monzonite stock exposed in Area #1 exhibits the alterations and styles of mineralization that indicates the weathered upper portion of an exposed porphyry copper-molybdenum system as indicated by the secondary copper minerals and absence of sulfur.  The zones of disseminated copper-molybdenum mineralization underlain by a historical chargeability/resistivity anomaly along with the spatial distribution of the quartz vein and fracture mineralization supports this interpretation.  The mineralization, alteration and hosts rocks in Area #2 suggest a deeper seated Laramide age porphyry intrusionemanating mineralized fluids upward along fractures..  

Historical Chargeability Anomaly:

In November 1971, Marguerite Lake Mines Ltd under the supervision of Fred. J. Syberg, B.Sc. completed an Induced Polarization and Resistivity survey (six lines) with line spacing of 1,000 ft, (304m) electrode spacing of 800 ft (243m), estimate depth of penetration of 1,600ft. (487m) using a dipole-dipole configuration.  Based on the results of the geophysical survey; Syberg concluded that the survey identified a chargeability anomaly measuring approximately 6,000 ft (1,800m) long by approximately 3,000ft (900m) wide. 

 Mineralization:

All three style of copper mineralization at Mineral Mountain contain malachite, chryscolla and chalcocite along with minor amounts of azurite and secondary native copper.  Rarely chalcopyrite and covellite has been observed in outcrop. The copper mineralization exhibits potassic and phyllic alteration with later propylitic (epidote veining) overprints.

In 2018, selected rock chip sampling was completed to characterize the copper-molybdenum-gold-silver concentrations as well as trace element geochemistry present in veins, other mineralized structures and the outcrop. These samples are not necessarily representative of the mineralization on the property. The average metal concentrations of the three styles of copper mineralization observed at Mineral Mountain are shown below.    

 

 

 

 

Average Concentration

 

 

Style of

Number of

Cu

Cu

Mo

Au

Ag

Mineralization

Samples

(ppm)

(%)

(ppm)

(ppb)

(ppm)

Disseminated

47

5,752

0.575

71.8

57.9

6.6

Quartz Vein

141

12,020

1.202

65.3

127.5

16.3

Fracture

135

4,223

0.422

13.6

43.1

7.3

Cu = copper, Mo = molybdenum, Au = gold, Ag =silver, (%) = percent, ppm = parts per million, ppb = parts per billion

The Quartz Vein hosted mineralization in Area #1 and Area #2 exhibit significant geochemical differences possibly due to proximity to the source porphyry system (see below).

Area Cu (ppm)  Cu (%) Mo (ppm) Mo (%) Au (ppb) Ag (ppm)
Area #1  9,621 0.962 80 0.008 143.9 17.6
Area #2  18,542 1.854 27 0.003 82.7 12.8

Cu = copper, Mo = molybdenum, Au = gold, Ag =silver, (%) = percent, ppm = parts per million, ppb = parts per billion. Number are rounded to reflect best practice principals.

Area #1 is characterized by disseminated, quartz vein/veinlet and fracture filled styles of copper mineralization.  Disseminated copper mineralization occurs as three separate northeast trending zones within Area #1 and range in size from 400m by 200m to 1,000m by 345-450m. Both Quartz Vein and Fracture controlled copper mineralization occurs within the zones of disseminated copper mineralization.

Molybdenum mineralization (defined as greater than 20 ppm) occurs in three zones ranging in size from 800m by 200m to 1,400m by 400-800m and overlaps the disseminated copper mineralization in Area #1. Molybdenum concentrations of up to 0.20% Mo have been identified by the sampling program in Area #1.

The mineralized Quartz vein/veinlets and Fractures exhibit a number of different strike and dip directions over narrow intervals.  The dominant strike direction of the mineralized structures is northeast along with a secondary northwest strike direction.  Fracture controlled chalcocite mineralization (up to 7 centimeters wide) have been observed in a number of outcrop. 

Area #2 consists of Quartz Vein and Fracture controlled copper mineralization hosted in Precambrian Pinal Schist, Diabase and the Ruin Granite that contains significantly lower concentration of molybdenum and variable concentrations of gold and silver.  The strike and dip directions for these styles of copper mineralization are similar to that observed in Area #1.

The Median Values for the three styles of mineralization at Mineral Mountain is presented below:

 

 

 

 

Median Values

 

 

Style of

Number of

Cu

Cu

Mo

Au

Ag

Mineralization

Samples

(ppm)

(%)

(ppm)

(ppb)

(ppm)

Disseminated

47

2,595

0.259

4.0

11.0

2.3

Quartz Vein

141

5,770

0.577

10.7

28.0

2.6

Fracture

135

1,523

0.152

3.0

10.0

1.5

Cu = copper, Mo = molybdenum, Au = gold, Ag =silver, (%) = percent, ppm = parts per million, ppb = parts per billion

The range of the metal concentrations for each style of mineralization at Mineral Mountain is shown below:

 

 

 

 

Range of Values

 

 

Style of

Number of

Cu

Cu

Mo

Au

Ag

Mineralization

Samples

(ppm)

(%)

(ppm)

(ppb)

(ppm)

Disseminated

47

73 to 20,200

0.007 to 2.20

0.5 to 1,060

5 to 696

0.4 to 65.4

Quartz Vein

141

80 to 103,800

0.008 to 10.38

0.2 to 2,080

5 to 872

0.2 to 483

Fracture

135

13 to 30,000

0.001 to 3.00

0.5 to 282

5 to 465

0.2 to 65.4

Cu = copper, Mo = molybdenum, Au = gold, Ag =silver, (%) = percent, ppm = parts per million, ppb = parts per billion