Orex Minerals Inc.
Orex Minerals Inc. Orex Minerals Inc.
Orex Minerals Inc. Projects

Orex Minerals Inc. Orex Minerals Inc.
Coneto de Comonfort,
Durango, Mexico

Our Coneto Silver-Gold Project is located in the Mesa Central, on the eastern flank of the Sierra Madre Occidental Mountains. It is situated in the region around the village of Coneto de Comonfort, in Durango, Mexico.

Coneto de Comonfort has a municipal population of approx. 4,000 people, which provides a good source of local labour and services.

Also, the local infrastructure is excellent:
  • On the national electric power grid
  • Paved road leads to center of project
  • Many additional gravel access roads
  • 35 km east - nearest major highway
  • 100 km south - city of Durango

Orex has 45% ownership of 10,600 hectares of mineral concessions at Coneto. It is currently being operated under an Association Agreement with Fresnillo Plc. Fresnillo brought to the joint venture 1,900 hectares, for a contiguous land package of 10,600 hectares. (about 27,140 acres)


The historic Coneto Mining District is situated in the heart of the "Mexican Silver Trend" which stretches from Guanajuato in the southeast, through to the states of Zacatecas and Durango.

The trend hosts some of the world's largest silver deposits, including:
  • Fresnillo - largest primary Ag-Au mine in the world & past billion oz Ag producer.
  • Guanajuato - past billion ounces Ag producer with 3 currently producing mines.
  • La Colorada - current producing mine of Pan American Silver.
  • La Pitarrilla - major development project of Silver Standard Mines.
  • La Preciosa - major development project of Coeur Mining Inc. (previously owned by Orko Silver Corp.).
  • Real de Angeles - past AG-Zn-Pb producer in Zacatecas State.
  • Zacatecas - past 750 million ounce Ag producer, with Capstone's Cozamin mine in production.


Orex's initial exploration program consisted of detailed structural geology mapping & geochemical sampling in the areas around Estrellas-Calaveras, Colimanito, Descubridora, Bufa, Promontorio, Promontorio Sur, Loma Verde, Sauces-Palma, Durazno and Impulsora. Fresnillo continues exploration in these areas as well as Indio, San Maritano, Santo Niño, and Impulsora Sur.
Fresnillo continues exploration in these areas as well as Indio, San Maritano, Santo Niño, and Impulsora Sur.
    To the end of Phase V, there have been four drilling programs totalling 104 holes and 38,600 metres, or 126,600 feet.
    • Phase-I Reconnaissance Drill Program completed
      • 5,000 m (15,750 ft)
      • 21 Holes on 7 targets
    • Important hits made in Phase-I:
      • Loma Verde: Hole CC-10-20 yielded true thickness of 3.12 m grading 0.982 g/t Au and 291.6 g/t Ag for a silver-equivalent of 350.5 g/t (or gold-equivalent of 5.824 g/t)
      • Impulsora: Hole CC-10-12 yielded true thickness of 4.60 m grading 1.596 g/t Au and 114.7 g/t Ag for a silver-equivalent of 210.5 g/t (or gold-equivalent 3.508 g/t)
    • Phase-II Diamond Drill Program completed under the joint venture with Fresnillo PLC. Important hits made in Phase II:
      • 11,998m (39,994 ft)
      • 31 Holes on 8 targets
    • Important hits made in Phase-II:
      • Loma Verde: Hole BCO-02 yielded true thickness of 10.27 m grading 3.08 g/t Au and 138 g/t Ag for a silver-equivalent 300 g/t
      • La Bufa: Hole BCO-11 yielded true thickness of 5.23 m grading 2.41 g/t Au and 129 g/t Ag for a silver equivalent of 256 g/t
      • Santo Niņo: Hole BCO-11 yielded true thickness of 2.70 m grading 4.34 g/t Au and 612 g/t Ag for a silver equivalent of 840 g/t
    • Phase-III Diamond Drill Program completed:
      • 11,744m (38,168 ft)
      • 30 Holes on 9 targets
    • Important hits made in Phase-III:
      • Loma Verde: Hole BCO-55 yielded true thickness of 4.20 m grading 0.93 g/t Au and 145 g/t Ag for a silver-equivalent 201 g/t
      • Promontorio: Hole BCO-60 yielded true thickness of 5.59 m grading 2.82 g/t Au and 66 g/t Ag for a silver equivalent of 263 g/t
    • Phase-IV Diamond Drill Program completed:
      • 4,656m (15,132 ft)
      • 11 Holes on 6 targets
    • Important hits made in Phase-IV:
      • Loma Verde: Hole BCO-66 yielded true thickness of 3.45 m grading 3.22 g/t Au and 238 g/t Ag for a silver-equivalent 432 g/t
      • Durazno - Alta: Hole BCO-68 yielded true thickness of 0.86 m grading 34.50 g/t Au and 30 g/t Ag for a silver equivalent of 2,100 g/t
    • Phase V Diamond Drill Program Completed:
      • 5,215 m (17,109 feet)
      • 11 holes on five targets
    • Important hits made in Phase V:
    • Durazno - Alta: Hole BCO-80 yielded true thickness of 0.92 m grading 4.71 g/t Au and 4 g/t Ag for a silver-equivalent of 318 g/t.
    • Nogales: Hole BCO-82 yielded true thickness of 0.88 m grading 0.4 g/t Au and 402 g/t Ag for a silver-equivalent of 428 g/t.

    click to enlarge

    Exploration objectives for our Coneto Silver-Gold Project are similar to our previous project - Orko Silver Corp's La Preciosa Silver-Gold Deposit. Orex is exploring for a target deposit size of more than 100 million oz of silver equivalent.


    Orex has signed an Association Agreement with Fresnillo Plc to explore the Coneto Silver-Gold Project. Orex and Fresnillo hold extensive contiguous mineral concessions in the Coneto Mining District, which collectively total approx. 17,600 hectares (43,000 acres) and cover more than 40 known mineralized epithermal quartz veins. A joint technical committee, with both Orex and Fresnillo representation, will manage Coneto.

    Fresnillo PLC had an option to spend up to $US 6,000,000 before February 2015 to explore the Coneto Silver-Gold Project in order to earn 55% ownership. Fresnillo has completed the $US 6,000,000 and the Coneto Project will continue as 55% Fresnillo : 45% Orex, with the Coneto Mining District mineral concessions of both companies pooled as a contiguous block.


    Coneto - Historic Mine Workings
    With a history of more than 400 years, Coneto has been a mining camp since the days of the Conquistadores. Over 40 veins of silver & gold have been documented in the Coneto mining camp, some over 20 m wide and extending more than a km in length. Very little diamond drilling had occurred on the property. However, drilling records from the 1970s yielded grades of 2.35 g/t Au and 224 g/t Ag for a silver equivalent of 365 g/t over 3.15 m in Loma Verde, part of the western vein system. The central vein system was also mined in the 1970s by private companies. Mining on several veins has only gone as far down as the water table, yet the veins continue below that level.

    Silver-equivalent determined as silver grade plus 60 times gold grade, the 10-year average metal price ratio on the London Metal Exchange. This also assumes 100% recovery, and does not include a contribution from base metals, nor fluorite.


    The central vein system was mined most recently by private companies for silver & gold in the 1970s, but closed in the early 1980s due to a drop in silver prices. The Palma and the Sauce veins were mined down to the water table.

    Coneto - Durazno Mine Portal
    The southeastern vein system has been mined to extract 'fluorite' from the Durazno and Impulsora veins. In places, the vein is 20 m thick. These operations mark a high level in the epithermal vein system. The southeastern vein system shows an increase in sulphides & precious metals with depth. Also in the southeastern zone is the broad Promontorio, a gold-rich stockwork system.

    The western vein system was drilled with one hole in the late 1970s, in the Loma Verde vein. Gold & silver results were strong and while a follow-up program was planned, it was never executed. Since then, 20 holes have been drilled in Loma Verde in Phases I to IV.

    Additional vein systems are located in target areas to the North including La Bufa, Santo Nino, El Reliz, Rosario, and El Rey.


    Impulsora - Historic Mine Workings
    The area exhibits an extensive system of hydrothermal alteration indicative of the presence of mineralization. Low to intermediate-sulphidation epithermal silver-gold quartz veins are in a window of Tertiary age lower volcanic group andesites, the same rock formation which hosts other similar silver-gold deposits. The mineral zonation shows that Coneto is high in the epithermal system and that the system is preserved. In this type of deposit, the top is fluorite rich, zoning to precious metals followed by base metals. Similar deposits in Mexico have mineralized vertical extents in the 300 m - 600 m range.


    CN Santo Niņo Trench Map
    click to enlarge

    CN Loma Verde Trench Map
    click to enlarge

    Coneto - Impulsora Trenching Map - August 2013
    click to enlarge

    click to enlarge


Orex Minerals Inc.