Manto Negro Copper Project


  • Sedimentary stratabound oxidized and Reduced Facies copper deposits
  • Analogous in style to the Kupferschiefer world class deposits
  • Hosted by Cretaceous limestone, conglomerate and sandstone
  • Mineralized horizons from 1m to over 23m thick, averaging 0.73% to 5.5% Cu
  • Significant strike length of semi-continuous Cu horizon on surface over 45 kilometers
  • Veins of richer Cu-Ag sulphide mineralization outcropping at various locations.
  • NI 43-101 Technical Report
Rich copper mineralization from Ojitos Manto Cuprite (black) Malachite (green)
Rich copper mineralization from Ojitos Manto Cuprite (black) Malachite (green)
The San Antonio Manto Average: Cu 1.14% Ag 6 g/t
Buena Suerte Copper Silver Manto Mineralized boulders in the talus
Buena Suerte Copper Silver Manto Mineralized boulders in the talus
Close-up view of part of the Manto Negro
Chrysocolla-rich sandstone

Manto Negro – Location


  • NE Mexico
  • Coahuila State
  • Chihuahuan Desert
  • Cuatro Ciénegas Area
  • Easy road access
  • Established infrastructure
  • Located proximal to mid-size cities with excellent access to skilled mining labour

Manto Negro – Land Tenure

Manto Negro – Geology


  • Manto Negro is a sediment-hosted stratiform copper-silver-lead-zinc deposit. Mineralization is associated with the contact of the clastic (hematite rich) of the San Marcos formation and the overlying limestone of the Cupido formation indicative of a sediment-hosted stratiform copper-silver-lead-zinc deposit of the Kupferschiefer-type (Reduced Facies Model).
  • Exposed rocks in the Manto Negro area are Lower Cretaceous clastic and carbonate rocks with a few scattered exposures of Permian granitic and Tertiary andesitic intrusive rocks.
  • Within the Manto Negro area such lateral potential is indicated by mines and prospects along the contact of the San Marcos – Cupido formations for 40 to 50 kilometers.
  • Thickness is variable in this type of deposit. The Pilar Grande Mine (Don Indio concession) (Stratabound,1998) found copper-silver mineralization over a 23m thick stratigraphic interval; at El Granizo estimated copper mineralization was over a thickness of 10m.
  • Deposit examples include Spar Lake (Troy), Rock Creek and Montanore (Montana, USA), White Pine (Michigan, USA), Creta (Oklahoma, USA), and Kupferschiefer district (Germany and Poland).

Copper and Chalcocite Pilar Grande Level 3

Prize Fieldwork 2017 to January 2019


  • 30Km of new access roads
  • 7,000Hectares of Geological Mapping
  • 138Systematically Sampled Trenches
  • 165Surface Samples
  • 102Underground Samples
  • 27Diamond Drill Holes for 2,796.7 Meters


Northern Property – Don Indio Concession


Longitudinal Don Indio West


Pilar Grande Mine

Copper-Silver mineralization in a 23 meter (75’) thick stratigraphic interval comprising the lowermost 10 meters of the “Cupido” limestone unit (Levels 1 and 2) and the uppermost 13 meters of the underlying hematized sandstone sequence (Levels 3 and 4). The workings extend for 150 meters along strike and 50 meters down dip, grades up to 5.86 % Cu / 901 g/t Ag. Average 2.5% Cu and 118 g/t Ag. Current 1000 metres underground development
2018 – 2019 Exploration Drilling
The drilling at Pilar Grande tested the mineralized horizon over a strike length of 180 meters with 11 diamond drill holes, for a total of 1,273 meters. Copper oxide and sulphide mineralization was intersected in all but holes DI-18-04 and DI-19-06. The Cu-Ag mineralization transitions from the oxide zone into the predominantly sulphide rich zone down dip to the northwest. The zone remains open down dip and along strike to the north and south. The access roads to the drill platforms were built onto the talus at the base of the mountain flank. The lack of talus material at both extremities of the drilled area prevented the drilling to extend further during this first phase.

Pilar Grande Mineralized Intersections


Hole number Claim From (m) To (m) Width (m) Cu % Ag g/t
DDHDI-18-01 Don Indio 83.50 87.60 4.10 0.88 49
DDHDI-18-02 Don Indio 66.50 69.90 3.40 1.58 122
DDHDI-18-03 Don Indio 73.30 77.35 4.05 0.82 55
  Don Indio 85.75 87.8 2.05 0.59 20
DDHDI-18-05 Don Indio 74.05 75.05 1.00 1.43 126
  Don Indio 80.90 83.05 2.15 0.78 37
  Don Indio 87.70 90.60 2.90 0.72 24
DDHDI-19-07 Don Indio 91.25 93.30 2.05 0.76 33
DDHDI-19-08 Don Indio 103.50 104.30 0.80 0.68 69
  Don Indio 107.45 113.50 6.05 1.29 77
DDHDI-19-09 Don Indio 79.90 80.30 0.40 0.51 39
DDHDI-19-10 Don Indio 103.00 104.05 1.05 3.23 135
DDHDI-19-11 Don Indio 69.55 73.35 3.80 1.62 143


La Cuchilla

At La Cuchilla zone, a Cu oxide mineralized outcrop was sampled over 3.5 meters and returned over 1% Cu and 44 g/t Ag. The entrance of the old Ag-Pb-Zn artisanal mine starts approximately 10 meters above the level of the Cu stratabound horizon and angles down to the SW at 35-45 degrees. The two completed diamond drill holes intersected Cu enriched horizons. Hole DDHCA-19-01 returned 6.67 meters at 0.75% Cu and 9.2 g/t Ag and hole 02 returned 1.2 meters at0.71% Cu and 13.4 g/t Ag.


La Cuchilla Mineralized Intersections


Hole number Claim From (m) To (m) Width (m) Cu % Ag g/t
DDHCA-19-01 Don Indio 29.70 36.45 6.75 0.75 9
DDHCA-19-02 Don Indio 15.00 16.20 1.20 0.71 13

El Pilon

In the El Pilon area a series of fault-bounded blocks were tilted toward the SW. The local geology dips more steeply, between -65 and -90 degrees. Only one of the three drill holes returned significant Cu-Ag mineralization (i.e. >0.5% Cu). Hole DDHEP-19-01 intersected two separate mineralized horizons; the first one, between 25.45 and 26.55 meters returned 1.21% Cu and 26g/t Ag over 1.10 m and the second one between 41.60 and 43.10 returning 1.24% Cu and 102g/t Ag over 1.50m. Further investigation is needed within the El Pilon area to better understand the block faulting affecting the mineralized horizon.



El Pilon Mineralized Intersections


Hole number Claim From (m) To (m) Width (m) Cu % Ag g/t
DDHEP-19-01 Don Indio 25.45 26.55 1.10 1.21 26
DDHEP-19-01 Don Indio 41.60 43.10 1.50 1.24 102

Manto Negro Center – El Granizo

The 2018 drilling at El Granizo was in the area of the historic Manto Negro Mine. It tested the mineralized horizon over a strike length of 500 meters. A total of 11 hole for 1,121.7 meters outlined an area approximately 150m in length by 50m down dip and 2-4m in thickness containing significant Cu oxide mineralization. However, the copper tenor does not transition into the sulphide zone at depth. A series of NE-SW faults and a major NE dipping SE-NW oriented fault limit and control the mineralization distribution.


Manto Negro Mineralized Intersections


Hole number Claim From (m) To (m) Width (m) Cu % Ag g/t
DDHMN-18-01 El Granizo 51.25 55.65 4.40 1.02 28
DDHMN-18-02 El Granizo 40.40 43.95 3.55 1.69 28


Manto Negro South East – Apache Concession Group

  • Over 30 km strike length not yet explored by Prize
  • More than 10 known copper prospects

Los Ojitos Zone

Buena Suerte Zone


La Curva Zone

San Antonio Zone


Manto Negro Copper Project


  • Mantos average range 0.73% to >5.5% copper
  • High silver lead zinc credits
  • Expected resource grades at 1.5% – 2% range
  • Property just under 18,000 hectares
  • 45 km in length
  • Over 35 known showings
  • 1.7 to 23m in thickness
  • Analogous to Kupferschiefer copper deposits
Production Potential
  • Oxide part of the deposits amenable to leaching
  • Metallurgical testing scheduled for 2019
100% Owned │ District Scale │ No Royalties