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IV.—On Soda-Microcline from Kilimandscharo
Published online by Cambridge University Press: 01 May 2009
Extract
The material, in which this felspar occurs, was collected by Dr Hans Meyer during his visit in 1887 to the East-African “snowmountain,” the Kilimandscharo, and kindly entrusted to me for description by Prof. F. Zirkel of Leipzig, to whom I desire to express my indebtedness for assistance and advice supplied me whilst working in his laboratory.
The rocks which possess this mineral as felspathic constituent are Nepheline- and Leucite-basanites, and were found in sitû on the south and south-east flanks of the Kibo peak. As rock-constituent this felspar is presumably confined to the outflows from the higher peak—the Kibo4—as no trace of it is to be found in the large series of rock-specimens, which represent the materials of which the other and lower peak—the Kimawenzi—is formed.
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References
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