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GeneralInteresting druzy lepidolite covering/replacing muscovite and schorl

15th Apr 2016 18:52 UTCDan Costian

Druzy lepidolite is covering/replacing muscovite books and even the terminated crystal of schorl, From Afghanistan: Dara-i-Pech pegmatite, Chapa Dara District, Konar Province. Usually it is the reverse: muscovite replacing lepidolite.

http://www.mindat.org/photo-741795.html

http://www.mindat.org/photo-741807.html

15th Apr 2016 20:19 UTCJosé Zendrera 🌟 Manager

Dan, this "lepidolite" covering has been analyzed? Many pink micas are just Mn-rich mica.

First photo is somewhat blurry and second link does not work.

15th Apr 2016 21:15 UTCDan Costian

No, José. It was not analyzed. The specimen was labeled as lepidolite and schorl from Dara-i-Pech. Not uncommon for this locality.

The second link is working on my computer. I don't know what happen. I'll reload it on the forum.

Best regards,

Dan

16th Apr 2016 21:35 UTCHenri Koskinen Expert

Mica booklets with both lepidolite and muscovite are common at Viitaniemi complex pegmatite in Finland. Inner areas of these booklets are muscovite and sides are lepidolite so I guess these are lepidolite pseudomorphs (epimorphs) after muscovite?

[url=https://flic.kr/p/eyQ7WV][img]https://farm8.staticflickr.com/7294/8904154601_66473f0503_b.jpg[/img][/url][url=https://flic.kr/p/eyQ7WV]Lepidolite and muscovite from Viitaniemi, Finland[/url] by [url=https://www.flickr.com/photos/aarnijaheka/]Henri Koskinen[/url], on Flickr

Another Li-pegmatite in Finland has lepidolite pseudomorphs after elbaite

[url=https://flic.kr/p/jk5qx6][img]https://farm8.staticflickr.com/7406/12030298235_744fc1c21c_b.jpg[/img][/url][url=https://flic.kr/p/jk5qx6]Lepidolite pseudomorph after elbaite from Haapaluoma, Finland[/url] by [url=https://www.flickr.com/photos/aarnijaheka/]Henri Koskinen[/url], on Flickr

[url=https://flic.kr/p/jk9CEW][img]https://farm8.staticflickr.com/7381/12031119506_e9771d913d_b.jpg[/img][/url][url=https://flic.kr/p/jk9CEW]Lepidolite pseudomorph after elbaite from Haapaluoma, Finland[/url] by [url=https://www.flickr.com/photos/aarnijaheka/]Henri Koskinen[/url], on Flickr

Henri