David K. Joyce

Altaite, Mattagami Lake Mine, Matagami, Quebec

Here are some ASTOUNDING specimens of altaite from one of the classic localities. These are extremely rich, with coarse cubic cleavages of tin-white altaite coursing through two types of matrices. One is a magnetite-rich matrix with rounded crystals of magnetite embedded in the rock and the altaite. The other is a sulphide- rich matrix (no magnetite) with pyrite and chalcopyrite inter-mixed with the altaite. There is supposed to be tellurantimony and mattagamite intermixed with the altaite. Honestly, I do not know what they look like or what size fraction they exist in, in these specimens (could be extremely fine-grained). I do know that they are GREAT specimens of altaite. Also, I note that the mine is named Mattagami Lake Mine (with two "tts"), whereas the town of Matagami and the actual Matagami Lake are spelled differently with one "t". I'm not sure why this is but if I find out, I'll let you know!

All prices in Canadian dollars. For payment in US$, deduct 18% or multiply by 0.82.

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

Altaite, Chalcopyrite, SphaleriteAltaite, Mattagami Lake Mine, Matagami, Quebec
  • Item #16271
  • Altaite, Chalcopyrite, Sphalerite
  • 5.1x3.1x2.1 cm
  • Largest Crystal Size: n/a
  • $65.00
  • Mattagami Lake Mine
  • Matagami
    Quebec, Canada
  • This specimen is largely composed of sulphides with a rich concentration of coarse cleavages of silvery altaite.