Georeference Online Ltd. 


USGS Porphyry Cu-Au Model:     Attribute - Value 
Frequency 
  Age - Quaternary 
sometimes 

  Age - Cretaceous 
sometimes 

  Age - Tertiary 
sometimes 

  Age - !OTHERS 
rarely 

  Alteration - altAssemblage 1 <-- 
sometimes 

    AlterationType - potassic 
always 

    ElementEnhanced - Fe 
sometimes 

    ElementEnhanced - Cu 
sometimes 

    ElementEnhanced - Au 
sometimes 

    ElementEnhanced - Ag 
sometimes 

    MineralEnhanced - magnetite 
sometimes 

    MineralEnhanced - quartz 
always 

    MineralEnhanced - Biotite 
sometimes 

    MineralEnhanced - chlorites 
sometimes 

    MineralEnhanced - k_feldspar 
sometimes 

    MineralEnhanced - actinolite 
sometimes 

    MineralEnhanced - anhydrite 
sometimes 

    OccursAtLeastPartlyWithin - zoneIn 1 --> 
always 

    OccursAtLeastPartlyWithin - zoneOut 2 --> 
always 

    OccursAtLeastPartlyWithin - zoneIn 3 --> 
always 

  Alteration - altAssemblage 2 <-- 
sometimes 

    AlterationType - phyllic 
always 

    ElementEnhanced - Mo 
sometimes 

    ElementEnhanced - Pb 
sometimes 

    ElementEnhanced - Zn 
sometimes 

    ElementEnhanced - Mn 
sometimes 

    MineralEnhanced - Muscovite 
sometimes 

    MineralEnhanced - clay_minerals 
sometimes 

    MineralEnhanced - Pyrite 
sometimes 

    MineralEnhanced - quartz 
sometimes 

    OccursAtLeastPartlyWithin - zoneIn 2 --> 
always 

  Alteration - altAssemblage 3 <-- 
sometimes 

    AlterationType - propylitic 
always 

    OccursAtLeastPartlyWithin - zoneOut 3 --> 
always 

  Alteration - altAssemblage 4 <-- 
sometimes 

    AlterationType - sericite-quartz 
always 

    MineralEnhanced - quartz 
sometimes 

    MineralEnhanced - Pyrite 
sometimes 

    MineralEnhanced - sericite 
usually 

    MineralEnhanced - clay_minerals 
sometimes 

    MineralEnhanced - calcite 
sometimes 

    OccursAtLeastPartlyWithin - zoneIn 3 --> 
always 

  DepositClassAssociated - Porphyry Cu-Mo 
sometimes 

  DepositClassAssociated - Placer Au-PGE 
sometimes 

  Mineralisation - minAssemblage 1 <-- 
sometimes 

    ElementEnhanced - Ag 
sometimes 

    ElementEnhancedToOre - Cu 
always 

    ElementEnhancedToOre - Au 
always 

    FormMineralisation - vein 
sometimes 

    FormMineralisation - dissemination 
sometimes 

    MineralEnhanced - Biotite 
sometimes 

    MineralEnhanced - magnetite 
sometimes 

    MineralEnhanced - chlorites 
sometimes 

    MineralEnhanced - actinolite 
sometimes 

    MineralEnhanced - anhydrite 
sometimes 

    MineralEnhanced - sylvanite 
sometimes 

    MineralEnhanced - Hessite 
sometimes 

    MineralEnhanced - quartz 
sometimes 

    MineralEnhanced - k_feldspar 
sometimes 

    MineralEnhancedToOre - gold 
sometimes 

    MineralEnhancedToOre - chalcopyrite 
usually 

    MineralEnhancedToOre - bornite 
sometimes 

    OccursAtLeastPartlyWithin - zoneIn 2 --> 
always 

    OccursAtLeastPartlyWithin - zoneIn 3 --> 
always 

    OccursAtLeastPartlyWithin - zoneIn 1 --> 
always 

  RockHost - dacitic tuff <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - syenite <-- 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

  RockHost - andesite <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - dacite <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - granodiorite <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - shoshonite <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - monzogranite <-- 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

  RockHost - monzonite <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - andesitic tuff <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  RockHost - tonalite <-- 
sometimes 

    HostsAtLeastPartly - zoneIn 1 --> 
sometimes 

    HostsAtLeastPartly - zoneOut 2 --> 
sometimes 

  Weathering - weathAssemblage 2 
sometimes 

    MineralEnhanced - Rutile 
sometimes 

  Weathering - weathAssemblage 1 <-- 
sometimes 

    Colour - brown 
sometimes 

    Colour - blue 
sometimes 

    Colour - green 
sometimes 

    ElementEnhanced - Au 
sometimes 

    ElementEnhanced - Cu 
usually 

    OccursEntirelyWithin - zoneOut 1 --> 
always 

  ZoneIn - zoneIn 1 <-- 
sometimes 

    ContainsAtLeastPartOf - altAssemblage 1 --> 
always 

    ContainsAtLeastPartOf - minAssemblage 1 --> 
always 

    HostedAtLeastPartlyBy - andesite --> 
sometimes 

    HostedAtLeastPartlyBy - andesitic tuff --> 
sometimes 

    HostedAtLeastPartlyBy - dacite --> 
sometimes 

    HostedAtLeastPartlyBy - dacitic tuff --> 
sometimes 

    HostedAtLeastPartlyBy - granodiorite --> 
sometimes 

    HostedAtLeastPartlyBy - monzogranite --> 
sometimes 

    HostedAtLeastPartlyBy - monzonite --> 
sometimes 

    HostedAtLeastPartlyBy - shoshonite --> 
sometimes 

    HostedAtLeastPartlyBy - syenite --> 
sometimes 

    HostedAtLeastPartlyBy - tonalite --> 
sometimes 

    ZoneInType - centre 
always 

  ZoneIn - zoneIn 2 <-- 
sometimes 

    ContainsAtLeastPartOf - altAssemblage 2 --> 
always 

    ContainsAtLeastPartOf - minAssemblage 1 --> 
always 

    ZoneInType - inner 
always 

  ZoneIn - zoneIn 3 <-- 
sometimes 

    ContainsAtLeastPartOf - minAssemblage 1 --> 
always 

    ContainsAtLeastPartOf - altAssemblage 1 --> 
always 

    ContainsAtLeastPartOf - altAssemblage 4 --> 
always 

  ZoneOut - zoneOut 1 <-- 
sometimes 

    ContainsTheEntire - weathAssemblage 1 --> 
always 

  ZoneOut - zoneOut 2 <-- 
sometimes 

    ContainsAtLeastPartOf - altAssemblage 1 --> 
always 

    HostedAtLeastPartlyBy - andesite --> 
sometimes 

    HostedAtLeastPartlyBy - andesitic tuff --> 
sometimes 

    HostedAtLeastPartlyBy - dacitic tuff --> 
sometimes 

    HostedAtLeastPartlyBy - granodiorite --> 
sometimes 

    HostedAtLeastPartlyBy - monzogranite --> 
sometimes 

    HostedAtLeastPartlyBy - monzonite --> 
sometimes 

    HostedAtLeastPartlyBy - shoshonite --> 
sometimes 

    HostedAtLeastPartlyBy - syenite --> 
sometimes 

    HostedAtLeastPartlyBy - dacite --> 
sometimes 

    HostedAtLeastPartlyBy - tonalite --> 
sometimes 

  ZoneOut - zoneOut 3 <-- 
sometimes 

    ContainsAtLeastPartOf - altAssemblage 3 --> 
always 

    ZoneOutType - !OTHERS 
always 


Questions or problems regarding this web page should be directed to
support@georeferenceonline.com.
Copyright 2002 Georeference Online Ltd. All rights reserved.
Date Generated: 14/05/2002 6:16:53 PM.