Acicular Scolecite Crystals

Size:    10x7mm

The specimen measures 60x60 mm

the younger tip is larger than the first tip

Biotite Mica Book | Black Crystal | 126 Grams | Córdoba, Spain Sericho Acicular Scolecite CrystalsThis is a beautiful, black Biotite crystal book from Crdoba. Spain. This biotite has a classic crystal shape and attractive dark coloration. Biotite is rarely considered a valuable mineral specimen, but it can accompany other minerals and compliment them. In Bancroft, Ontario Biotite forms large crystals with green apatite and hornblende. Single large plates or "books" of biotite can grow to considerable size and can make impressive mineral specimens.