作者TeaBags (茶包)
看板Crystal
标题Re: [问题] 海洋碧玉 澎湖文石 孔雀石??
时间Wed Jul 12 01:46:10 2006
※ 引述《TeaBags (茶包)》之铭言:
: 推 duan:那...那粉圆有可能是什麽造成的咧?? 愈来愈疑惑了..... 07/11 17:36
贴个国外网站的解说,抱歉茶包英文不好,只能大概描述....
Rhyolite is an igneous rock, rich in silica. As it cools, sometimes
the silica starts to precipitate out of the magma, forming little
spherical balls. This type of formation is easily recognizable in the
aforementioned jaspers. If these balls or "globs" of silica-rich magma
are allowed to grow larger before the whole mass becomes solid, they can
crack and shrink forming what later may become Thundereggs.
Ocean Jasper has a typical rhyolite formation except that the entire
mass has somehow been converted to pure silica (agate, jasper, quartz).
The descriptions "silicated rhyolite", petrified rhyolite, or agatized
rhyolite are non-sensical but take on a generally understandable meaning
when viewing this rock. To my knowledge, there has never been a material
like this available before.
资料来源:
http://www.thegemshop.com/o_jasper.htm
大意是当富含矽质的流纹岩开始冷却,其中矽质成分开始从熔岩中冷却凝固结晶出来的
时候有时候会形成一些小球,而这些小球被之後冷却结晶的矽质成分包裹住之後,就形
成像是海洋碧玉这样的型态。
因此里面同心圆状的纹路其实原本是矽质的球状结晶体,而且是在高温的熔岩中产生,
珊瑚卵或者粉圆如果可以耐这种高温也是粉神奇的啦.... ^_^
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1F:推 duan:哦~ 所以文石眼跟海碧眼 本来就是差不多的东西是吗 (._.)!... 07/14 16:16
2F:→ duan:那表情我是想表达(笔记..)啦 XD 不管怎样这两种石头我都很댠 07/14 16:21
3F:→ duan:喜欢~~ ^_____^ 07/14 16:23
4F:推 TeaBags:海洋碧玉跟文石差很多低,成分不同硬度也不同... 07/15 00:31