Biotite inclusion at interface of two varieties of granite. The Big Garden Croft, Isle of Eriskay Published 15/08/2016 at 1080 × 720 in Biotite Biotite inclusion at interface of two varieties of granite Continue reading →Like this:Like Loading... Biotite inclusion at interface of two varieties of granite. The Big Garden Croft, Isle of Eriskay Share this:FacebookTwitterWhatsAppPinterestPocketMoreTelegramTumblrRedditEmailSkypeLinkedInPrintLike this:Like Loading...