Dims: 2.2 x 1.9 x 0.5" (5.6 x 4.8 x 1.3 cm)
Wt: 26.3 g
Sabsir, Rondu District, Gilgit-Skardu Rd., Northern Areas, Pakistan
This large thumbnail specimen consists of an albite crust on which rest at least 13 Herderite crystals. Two of these crystals are visibly damaged and one is broken, but the others appear to be in excellent condition. They reach lengths of 0.6" (1.5 cm) and have good monoclinic prismatic form, with well-defined edges and clean faces. All have a pale greenish-gray color and a bright pearly luster, and are transparent and dimly to moderately clear. The Herderites are accompanied by a large number of very small Elbaite crystals that have a good form. They appear to have a very pale green coloration; this is difficult to see, though, as they are mostly covered with a thin crust of intergrown muscovite platelets. The albite base on which they rests is visibly crystalline, but shows no definable form.