APATITE
Specimen apa-8
$ 100.00Dims: 5.6" x 3.9" x 2.7" (14.2 x 9.9 x 6.9 cm)
Wt: 1 lb., 14.3 oz. (858 g)
Minas Gerais, Brazil
Though there are at least 7 discernable Apatite crystals on this specimen, most are so heavily intergrown with the largest one that they are not really worthy of mention. The two largest crystals make up the bulk of the Apatite on this piece. They both show considerable damage but have reasonably good hexagonal prismatic form, with rounded but definite edges and smooth faces that show a pearly luster. They are opaque and show a pale green-gray coloration on their surfaces. The damage, though detracting some from the piece, allows one to see that the crystals' pale green coloration is due to a relatively thin coating. Their interior consists of material that has a very dark, brown-green coloration. The Apatites rest on a pegmatite base that is made up of a combination of albite, quartz, and muscovite. The muscovite occurs in several well-formed hexagonal "books", and shows only a small amount of damage. It is one of the more impressive Apatite specimens that I have had the pleasure to study, and its layering is quite intriguing.