One of the Avebury group of Ni deposits, near Zeehan.
References:
Bottrill, R.S. and Sorrell, S.P. (2007): Focus on Avebury, western Tasmania. The Australian and New Zealand Mineral Collector Magazine, Issue 2.
Mineral Resources Tasmania, Mineral Deposit Database, 2006.
http://www.allegiance-mining.com.au/default.asp?id=29