[安山岩]
是一種火山噴出岩，屬於中性，是造山帶普通的火山岩，主要含有的礦物是鐵、鈦的氧化物，其中含有斑晶，可能是長石、輝石、角閃石、雲母或石英。
[ Andesite ] is a fine-grained, extrusive igneous rock composed mainly of plagioclase with other minerals such as hornblende, pyroxene and biotite.
The
Geological Society of Hong Kong is a non-profit organisation
that attempts to promote geological and earth science studies
within Hong Kong and the adjacent region. We organise
local and overseas fieldtrips, as well as lectures.
The Society publishes a journal (The Hong Kong Geologist) and
bulletins dealing with a variety of earth science subjects.
Last updated: 17 Jun 2008
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