Ekanite, Diopside, Wollastonite

Specimen ID: 7C1-L6C

Ekanite : Ca2ThSi8O20
Diopside : CaMgSi2O6
Wollastonite : CaSiO3
As recorded:
Oak-saung-taung, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mindat locality:
6.5cm x 5.5cm x 4cm
weight: 129g

Photo added to mindat.org

3.5x2.5x2 cm fragment of unusually large for the specie prismatic crystal of dark bottle-green Ekanite with composition (Ca1.47Na0.32K0.23)2.02(Th0.73U0.25)0.98[Si8O19.41(OH)0.59]. Associating minerals are white Wollastonite and massive more light-green Diopside, which is coarse-granular and not so lustrous as Ekanite. Also some of minute Graphite presents. Apparently host rock is calcian skarn. Specimen size is 6.5x5.5x4 cm, its weight is 129 g and radioactivity - 1440 μR/h. Specimen obtained from Sieghard Ellenberger (Crystal-Treasure). Pavel M. Kartashov collection and scan.
Pavel Kartashov - 28th July 2010
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