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Abstract

In this paper the authors refer to their note on the same
rock presented to the Society last year, since when they
have further examined it microscopically, and have studied
its occurrence on the spot. They acknowledge their
indebtedness to Mr. R. Williams, the Manager of the Colebrook,
for many useful and interesting specimens. The
mine is between Rosebery and Ringville, on the saddle of
a hill about 1500 ft. above sea-level, and is remarkable for
the quantity of pyrrhotite occurring in the rock, associated
with copper pyrites in relatively small quantities. The
authors do not regard the occurrence as a lode, but rather
as a rock mass, in the form of an irregular dyke or intrusion.

Item Type:	Article
Authors/Creators:	Twelvetrees, William Harper and Petterd, William Frederick
Keywords:	Royal Society of Tasmania, Van Diemens Land, VDL, Hobart Town, natural sciences, proceedings, records
Journal or Publication Title:	Papers & Proceedings of the Royal Society of Tasmania
Collections:	Royal Society Collection > Papers & Proceedings of the Royal Society of Tasmania
Additional Information:	In 1843 the Horticultural and Botanical Society of Van Diemen's Land was founded and became the Royal Society of Van Diemen's Land for Horticulture, Botany, and the Advancement of Science in 1844. In 1855 its name changed to Royal Society of Tasmania for Horticulture, Botany, and the Advancement of Science. In 1911 the name was shortened to Royal Society of Tasmania.
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