Summary: Eclogite occurring about 20 miles east of Queenstown, Tasmania, is the first example of this kind of rock to be described in detail from Australia. It has the chemical composition of a basic igneous rock and consists of garnet (Al15·8Fe0·6‴Fe10·0″Mg7·3Ca5·7Si24O96) and pyroxene (Ca4·5Na2·5Mg3·7Fe0·7″Fe0·4‴Ti0·1Al3·7viAl0·7ivSi15·3O48) with amphibole, muscovite, zoisite, quartz, rutile, and pyrite. The eclogite consists of lenticular bodies within Precambrian garnetiferous schists.