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Noranda - Horne, Quemont, Gallen, Amulet, Norbec, Vauze, Ansil, Waite, Aldermac, Corbet, Delbridge

Quebec, Canada

Main commodities: Cu Au Zn Ag
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The 7 to 9 km thick Noranda Volcanic Complex within the Abitibi Belt of the Superior Province hosts a series of Archaean (2.8 Ga) volcanic hosted massive sulphide deposit within the Rouyn-Noranda district of Quebec, Canada.   The complex is believed to be part of a 35 km diameter shield volcano.

A number of these deposits are descibed in individual records elsewhere in the database.

Individual deposits and their tonnage and grades include:

  Ansil - 1.58 Mt @ 7.2% Cu, 0.9% Zn, 27 g/t Ag, 1.6 g/t Au
  Vauze - 0.35 Mt @ 2.94% Cu, 0.94% Zn, 24 g/t Ag, 0.7 g/t Au
  Norbec - 3.95 Mt @ 2.77% Cu, 4.50% Zn, 48 g/t Ag, 0.7 g/t Au
  East Waite - 1.5 Mt @ 4.13% Cu, 3.26% Zn, 31 g/t Ag, 1.8 g/t Au
  Old Waite - 1.12 Mt @ 4.70% Cu, 2.98% Zn, 22 g/t Ag, 1.1 g/t Au
  F-Shaft - 0.27 Mt @ 3.40% Cu, 8.60% Zn, 46 g/t Ag, 0.3 g/t Au
  Amulet C - 0.57 Mt @ 2.20% Cu, 8.54% Zn, 87 g/t Ag, 0.6 g/t Au
  Amulet Lower A - 4.69 Mt @ 5.14% Cu, 5.28% Zn, 44 g/t Ag, 1.4 g/t Au
  Amulet Upper A - 0.19 Mt @ 2.37% Cu, 6.12% Zn, 46 g/t Ag, 2.0 g/t Au
  Amulet 11 - 0.45 Mt @ 3.65% Cu, 2.38% Zn, 29 g/t Ag, 0.71 g/t Au
  Millenbach - 3.56 Mt @ 3.47% Cu, 4.33% Zn, 56 g/t Ag, 1.0 g/t Au
  Corbet - 2.78 Mt @ 3.00% Cu, 1.96% Zn, 21 g/t Ag, 1.0 g/t Au
  Quemont - 13.8 Mt @ 1.32% Cu, 2.44% Zn, 31 g/t Ag, 5.5 g/t Au
  Aldermac - 1.88 Mt @ 4.70% Cu, 7 g/t Ag, 0.3 g/t Au
  Deldona - 0.09 Mt @ 0.30% Cu, 5.00% Zn, 26 g/t Ag, 4.1 g/t Au
  Delbridge - 0.36 Mt @ 0.55% Cu, 8.6% Zn, 69 g/t Ag, 2.4 g/t Au
  Gallen - 2.95 Mt @ 0.07% Cu, 4.77% Zn, 22 g/t Ag, 0.7 g/t Au
  Mobrun - 8.64 Mt @ 0.63% Cu, 4.66% Zn, 31 g/t Ag, 1.5 g/t Au
  Horne (mined) - 54.3 Mt @ 2.22% Cu, 13 g/t Ag, 6.1 g/t Au
  Horne 5 Zone - 150 Mt @ 0.1% Cu, 0.7% Zn, 1.3 g/t Au


Most of these deposits are associated with a bimodal sequence of rhyolite and andesite flows of the Mine Sequence and occur within the Noranda cauldron, a volcanic subsidence structure related to an underlying magma chamber, the Flavrian Pluton.   The Horne massive sulphide orebodies lie within a sequence of rhyolitic breccias located just south of the subsidence structure and are separated from the mine sequence by the Horne Creek Fault.   These two groups of deposit share many characteristics, although they also differ.

The first group, the intra-cauldron deposits are small (<5 Mt), Cu-Zn rich and were developed as concordant mounds in interflow horizons linked to structurally controlled vent zones and associated with the bi-modal volcanism.   The three large (20 to 50 Mt) Horne deposits were formed in a fault bounded, sediment filled graben on the flank of a rhyolite vent complex as Au-Cu rich and Zn poor deposits with bowl shaped morphologies and associated with felsic volcanics only.

Economic mineralisation is also found in at least 3 separate volcanic cycles.

For detail see the reference(s) listed below.

The most recent source geological information used to prepare this summary was dated: 1993.    
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd.   Unauthorised copying, reproduction, storage or dissemination prohibited.


  References & Additional Information
   Selected References:
Bellefleur G, de Kemp E, Goutier G, Allard M and Adam E,  2014 - Seismic Imaging of the Geologic Framework and Structures Related to Volcanogenic Massive Sulfide Deposits in the Archean Rouyn-Noranda District, Quebec, Canada : in    Econ. Geol.   v.109 pp. 103-119
Galley A G, Jonasson I R and Watkinson D H  2000 - Magnetite-rich calc-silicate alteration in relation to synvolcanic intrusion at the Ansil volcanogenic massive sulfide deposit, Rouyn-Noranda, Quebec, Canada: in    Mineralium Deposita   v35 pp 619-637
Kerr D J, Gibson H L  1993 - A comparison of the Horne volcanogenic massive Sulfide deposit and intracauldron deposits of the mine sequence, Noranda, Quebec: in    Econ. Geol.   v88 pp 1419-1442
Paradis S, Taylor B E, Watkinson D H, Jonasson I R  1993 - Oxygen isotope zonation and alteration in the northern Noranda district, Quebec: evidence for hydrothermal fluid flow: in    Econ. Geol.   v88 pp 1512-1525
Taylor B E, de Kemp E, Grunsky E, Martin L, Maxwell G, Rigg D, Goutier J, Lauziere K and Dube B,  2014 - Three-Dimensional Visualization of the Archean Horne and Quemont Au-Bearing Volcanogenic Massive Sulfide Hydrothermal Systems, Blake River Group, Quebec : in    Econ. Geol.   v.109 pp. 183-203


Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge.   It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published.   While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo takes no responsibility what-so-ever for inaccurate or out of date data, information or interpretations.

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