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Identity HelpMystery crystal #2

24th Sep 2019 14:29 UTCDerek Lowe

02127380015693317372232.jpg
Not sure what this crystal is.  It has colouring very similar to biotite mica, but it is much harder than biotite and is a solid crystal and not sheets (like biotite).  Any ideas?  I will upload more pics, of other views...

24th Sep 2019 14:30 UTCDerek Lowe

05545650015693318019677.jpg
Pic #2

24th Sep 2019 14:30 UTCDerek Lowe

08177680015693318242117.jpg
Pic #3

24th Sep 2019 14:30 UTCDerek Lowe

01140710015693318382294.jpg
Pic #4 (the underside of the crystal)

24th Sep 2019 14:31 UTCDerek Lowe

08833050015693318652813.jpg
Pic #4 (the underside of the crystal)

24th Sep 2019 15:31 UTCAndrew Debnam

It appears to be Titanite, nice find. Where is it from?

24th Sep 2019 16:45 UTCDerek Lowe

Titanite Hill, actually, but it doesn't look as 'wedge-like' as the other titanites that I have seen from there.  Also, the other titanites seem to be all black with the shiny lustre, but this crystal has brown / gold streaking (or veins) throughout.

24th Sep 2019 17:15 UTCAndrew Debnam

Hello Derek,  Titanite crystals can many different morphologies including the wedge shape you mention. The color can also vary dark brown (aka Black) to reddish brown etc.  This is true at the locality you mention above.  I cannot see the streaking you mention in the photo above.  A cleavage plane can make also give the impression of a color change.

think link will show the many different forms Titanite can have


If you are in the greater Toronto area you could bring the specimen into Royal Ontario Museum identification clinic or a meeting of The Walker Mineralogical Club.

17th Oct 2019 00:50 UTCDerek Lowe

Well, I went to the ROM clinic and the verdict is:
Titanite :) (with the red tinting, he even correctly guessed this specimen was from Tory Hill (as opposed to my other titanite, that was from the Smart Mine)

17th Oct 2019 13:28 UTCAndrew Debnam

Thanks for the update and confirmation Derek
 
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