. Papers and proceedings of the Royal Society of Tasmania . iiyne. Groundmass = crystals of greenaugite and haiiyne with allotriomorphic ortlioclase fel-spar. From Port Cygnet. X nicols. X 16. Fig. 4.—Section of trachyte from back road, two miles ofLymington. Porphyritic crystals = sanidine in Carls-bad twins and zoned, plagioclase, green hornblende andaugite. X nicols. x 16. Fig. .5.—Section of haiiyne-trachyte from Livingstone Hill, Lovett, showing large porphyritic sanidines. Thedark liexagon on the left represents melanite-garnet;the smaller crystal below it is green augite. Su
. Papers and proceedings of the Royal Society of Tasmania . iiyne. Groundmass = crystals of greenaugite and haiiyne with allotriomorphic ortlioclase fel-spar. From Port Cygnet. X nicols. X 16. Fig. 4.—Section of trachyte from back road, two miles ofLymington. Porphyritic crystals = sanidine in Carls-bad twins and zoned, plagioclase, green hornblende andaugite. X nicols. x 16. Fig. .5.—Section of haiiyne-trachyte from Livingstone Hill, Lovett, showing large porphyritic sanidines. Thedark liexagon on the left represents melanite-garnet;the smaller crystal below it is green augite. Surround-f ing these two crystals are small forms of haiiyne. X nicols. X 16. Fig. 6.—Section of green aegirine-trachyte from beach S. ofLovett. Porphyritic sanidine and augite. Groundmass= rods of pale green aeg^irine and prisms of sanidinewith fluxion structure. Plain light, x 16. Figs. 7 and 8.—Megasco^Dic photographs of dull tabular ortho-clase (decomposed sanidine) crystals in haiiyne-trachyte^on Livino^sfone Hill, of Lovett. Natm-al
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Keywords: ., bookcentury1800, bookdecade1860, bookidpapersprocee, bookyear1863
