THE RIDGEWAY GOLD-COPPER DEPOSIT: A HIGH-GRADE ALKALIC PORPHYRY DEPOSIT IN THE LACHLAN FOLD BELT, NEW SOUTH WALES, AUSTRALIA—A DISCUSSION

2005 ◽  
Vol 100 (1) ◽  
pp. 175-176
Author(s):  
Raymond E. Smith
Keyword(s):  
New South ◽  
New South Wales ◽  
Copper Deposit ◽  
High Grade ◽  
Fold Belt ◽  
Porphyry Deposit ◽  
South Wales ◽  
Lachlan Fold Belt

Lachlan Fold Belt in New South Wales

1978 ◽  
Vol 48 (3-4) ◽  
pp. 217-265 ◽  
Author(s):  
L.B. Gilligan ◽  
E. Scheibner
Keyword(s):  
New South ◽  
New South Wales ◽  
Fold Belt ◽  
South Wales ◽  
Lachlan Fold Belt

Vanadium-Bearing Margarite from the Lachlan Fold Belt, New South Wales, Australia

1988 ◽  
Vol 52 (366) ◽  
pp. 341-345 ◽  
Author(s):  
V. J. Morand
Keyword(s):  
Solid Solution ◽  
Local Reaction ◽  
New South ◽  
New South Wales ◽  
Contact Aureole ◽  
Fold Belt ◽  
Metamorphic Mineral ◽  
South Wales ◽  
Lachlan Fold Belt ◽  
Black Slate

AbstractMargarite occurs in Ordovician black slate within the contact aureole of the Wyangala Batholith, in the Lachlan Fold Belt in New South Wales. This occurrence is the first described from New South Wales. It is a regional metamorphic mineral replacing chiastolitic andalusite, and contains up to 1.07% V2O3 and up to 0.37% Cr2O3. Vanadium and chromium here substitute for octahedral aluminium. Margarite is produced by a local reaction in which Ca and H2O are introduced into andalusite grains. There is a significant paragonite component in the margarite but negligible muscovite solid solution.

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