currently at the present time does not mean it wont or isn't going to happen very soon..currently ways are being worked on to make it more commercially viable ..why ? because lithium is one hot commodity..
have a read of this get educated..
http://www.asx.com.au/asxpdf/20150520/pdf/42yp4ty4y6g0c2.pdf
Why Lepidolite is a big threat to Spodumene miners., page-8
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