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PhotosBetafite (of Hogarth 1977) - Silver Crater Mine, Faraday Township, Hastings Co., Ontario, Canada

5th Dec 2012 20:33 UTCErik Vercammen Expert

08903420014977225675765.jpg
Betafite (of Hogarth 1977)
Silver Crater Mine, Faraday Township, Hastings County, Ontario, Canada
Copyright © Rudy Bolona
The caption says: "two crystals, the usual hexoctahedral with a flattened crystal associated" but this crystal is a cuboctahedron.

5th Dec 2012 20:59 UTCReiner Mielke Expert

I see no cube faces in this crystal.

5th Dec 2012 21:11 UTCErik Vercammen Expert

The face under-left is a cube face, as is the square face on the right upper side. The 4 other visible faces belong to the otahedron (that is dominant in this crystal).

6th Dec 2012 03:15 UTCDavid K. Joyce Expert

It appears to me that you have a cube-octahedron of betafite (lower) attached to a flattened, hexagonal crystal of apatite (upper), a common association at the Silver Crater Mine. That is what I seem to see.


David K. Joyce

6th Dec 2012 03:21 UTCDavid K. Joyce Expert

Mind you, it would be nice to see the other side or examine it up close since, from this image, it is sort of possible to see a very distorted cube-octahedron on top, as well.


David K. Joyce

6th Dec 2012 15:57 UTCJohan Kjellman Expert

probably a quite innocent mistake:

cube-octahedron = hexaedron + octahedron

but not hexoctahedron

and yes, the flat crystal is likely a distorted hexoct...sorry cube-octahedron!


cheers
 
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