David K. Joyce Minerals

Greenland Minerals, Semenovite-(Ce), Taseq, Ilimaussaq

Here are some excellent examples of the rare mineral Semenovite from the Ilimaussaq Alkaline Complex. The crystals are sort of octahedral-looking with some taking on a more rounded look because of a thicker, outer crystallization. The seminovite is mostly associated with epididymite and natrolite. Rare! Here are some excellent examples.

All prices in Canadian dollars. For payment in US$, deduct 19% or multiply by 0.81.

Click on any of the following thumbnails to view a larger image of the specimen.

Semenovite-(Ce), EpididymiteGreenland Minerals, Semenovite-(Ce), Taseq, Ilimaussaq
  • Item #15001
  • Semenovite-(Ce), Epididymite
  • 4.2x3.5x2.1 cm
  • Largest Crystal Size: micro
  • $80.00
  • Taseq
  • Ilimaussaq
    Greenland
  • There are two vugs in this specimen, both of which have nice semenovite crystals in them, associated with epididymite. The best crystals are on the epididymite vug and have a thick, darker brown outer zone which rounds them somewhat. The crystals in the other vug are smaller but have a thinner, beige outer zone.
Semenovite-(Ce), EpididymiteGreenland Minerals, Semenovite-(Ce), Taseq, Ilimaussaq
  • Item #15005
  • Semenovite-(Ce), Epididymite
  • 4.8x4.3x3.8 cm
  • Largest Crystal Size: micro
  • $80.00
  • Taseq
  • Ilimaussaq
    Greenland
  • A vug at the top of this specimen is totally lined with very sharp bi-pyramidal crystals of semenovite plus a couple of sharp epididymite crystals.
Semenovite-(Ce), EpididymiteGreenland Minerals, Semenovite-(Ce), Taseq, Ilimaussaq
  • Item #15007
  • Semenovite-(Ce), Epididymite
  • 6.5x4.4x2.2 cm
  • Largest Crystal Size: micro
  • $75.00
  • Taseq
  • Ilimaussaq
    Greenland
  • A couple of isolated, well formed semenovite crystals are present in a vug mostly lined with excellent, colourless, epididymite crystals.
Semenovite-(Ce), EpididymiteGreenland Minerals, Semenovite-(Ce), Taseq, Ilimaussaq
  • Item #15009
  • Semenovite-(Ce), Epididymite
  • 5.8x5.5x2.4 cm
  • Largest Crystal Size: micro
  • $80.00
  • Taseq
  • Ilimaussaq
    Greenland
  • Lots of well formed, beige, bi-pyramidal crystals of semenovite in two vugs on this specimen. Excellent crystals of this rare mineral!
Sodalite, var. HackmaniteGreenland Minerals, Semenovite-(Ce), Taseq, Ilimaussaq
  • Item #20234
  • Sodalite, var. Hackmanite
  • 4.1x5.6x5.5 cm
  • Largest Crystal Size: n/a
  • $75.00
  • Narsaarsuk

  • Greenland
  • A beautifully fluorescent hackmanite specimen from the famous alkaline intrusive occurrence at Narsaarsuk. Please note that the fluorescent colour is intense yellow only with no red. I could not seem to capture that colouration with my camera! Very nice!