While waiting for the analysis of the grade from the dolerite from the deep hole , here's an interesting bit that I dug out from the article DazedandConfused shared :
The Table below is Mt. Charlotte's production from its quartz vein orebodies (Reward and Maritana) over a period of 50 years. Note that it averaged 90,000 oz / annum production over this period - a constant source of revenue over 50 years! No wonder it is a big deal if Boorara is similar.
Column 1 Column 2 Column 3 Column 4 Column 5 Column 6 0 Period Years Gold Recovered (tonnes) Gold Recovered (oz) Production / Annum (oz) Recovered Grade 1 1964-1978 15 36.39 1,169,966 77,998 4.28 2 1979-1989 11 37.661 1,210,829 110,075 3.89 3 1990-1994 5 20.458 657,740 131,548 2.75 4 1995-2001 7 27.163 873,311 124,759 2.63 5 2002-2013 12 18.5 594,789 49,566 3 6 TOTAL 50 140.172 4,506,635 90,133 3.5 (average)
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Ann: 116 Metre Dolerite Zone Intercepted in Deep Hole, page-29
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