Facts and Formation
- Topaz is a silicate mineral most often found in igneous rocks of felsic composition.
- It is also found in some hydrothermal veins and the hydrothermally altered rocks that surround them.
- It is a common mineral of pegmatite and also found in the cavities of rhyolite and granite.
- Known occurrences are found in Eping, Semang-Potaro and Maikawk
