Kyauk-poke (Rotten Stone), Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

The mining area has been known for a long time. The principle rocks are apatite-phlogopite-diopside marble, graphite-phlogopite marble and others. Rubies and spinels are found in different types of marble using typical gwè-dwins and small tunnels. The ruby-bearing marble bands are greenish-bluish, bluish and brownish, with coarse grained texture and oriented at ~175° direction. Associated minerals include sphene, scapolite, pyrite and diopside. Spinels are found in the spinel-bearing marbles.

Ref: Ted Themelis (2008) Gems and Mines of Mogok, p. 229

Gemstone List

Gem list contains entries from all listed localities in region.

Localities in this Region

  • Mandalay Region
    • Pyin-Oo-Lwin District
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