Schorl is the most common member of the tourmaline group — a sodium-iron aluminum borosilicate.

In many rocks — especially granite pegmatites, metamorphic rocks, and hydrothermal veins — schorl occurs together with common “host” minerals: micas (like muscovite), feldspars, quartz/ albite, etc.

So when you see a specimen labeled “Schorl with Muscovite & Feldspar,” that typically means you have black schorl crystals embedded in or growing alongside muscovite mica and feldspar (often a light-colored feldspar such as microcline or albite). This kind of association reflects how the minerals crystallized together in a pegmatitic or metamorphic environment.

In Pakistan — particularly in regions such as the mountainous areas of northern Pakistan (e.g. Skardu / Gilgit‑Baltistan) — such associations are not uncommon, thanks to the complex geology: metamorphism, pegmatites, tectonics, and uplift that exposed deep crustal rocks.