The ore-bearing rock is composed mainly of andesitic tuff and tuffite.
作者在赋层中首次发现了层状电气
岩。
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Most of the broad summit is comparatively level and thick sown with crystals, quartz, mica, hornblende, feldspar, granite, zircon, tourmaline, etc., weathered out and strewn closely and loosely as if they had been sown broadcast.
宽阔的峰分较为平坦, 密布着水晶、石英、云母、角闪石、长石、花岗岩、锆石、电气石等,经风化后,密布、松
, 犹如播种。
Listening, admiring, until late in the afternoon I compelled myself to hasten away eastward back of rough, sharp, spiry, splintery peaks, all of them granite like the Cathedral, sparkling with crystals—feldspar, quartz, hornblende, mica, tourmaline.
边听边欣赏,直下午晚些时候,我才强迫自己加速向东撤退,
糙、尖锐、尖尖、多裂的山峰,所有这些山峰都像
教堂一样的花岗岩,闪闪发光的晶体——长石、石英、角闪石、云母、电气石。