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"Greisen Lode" is the name given locally to the foot-wall section of a wider mineralised zone, which will be referred to as the Greisen Orebody in this report. Mining operations have been carried out by tributers in recent years on several portions of the orebody, namely, stoping from the Main Tunnel, stoping from an adit-crosscut driven from the No. 4 Gossan Bench, and some stoping operations from a level above the latter bench. During the past three months a level has been driven for 260 feet westwards from the Main Tunnel to prospect the orebody at this level and develop it for mining. Over the past few weeks a detailed geological examination of the orebody has been made and the area involved mapped on a scale of 20 feet to an inch by means of plane table and alidade.
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The following information regarding calcium phosphate deposits or phosphate rock in Tasmania has been obtained from the following sources - published reports and typewritten reports of the Tasmanian Mines Department and my own personal knowledge gained while Government Geologist of Tasmania.
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This sample of bryozoal marl from Montagu, Tasmania, was collected by Mr. F. Canavan. It contains a faunal assemblage typical of the Balcombian Stage of the Middle Miocene as found in Victoria and can be referred to Longford substage of the Balcombian.
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Restricted on advice from A. Barrett
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Restricted on advice from A. Barrett
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No abstract available
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