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PostPosted: Sun Nov 26, 2006 7:54 pm 
1.Sunstone
2.maxixe beryl
3 Iolite
4. Epidote
5 Bastnasite
6 Idocrase
7. Petalite
8. Maw-sit-sit
9 Realgar

I assume that nr. 1 is not HESSONITE as that is a garnet and I already put garnet on one place ones and that was noting ...


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 Post subject: what have I got to lose??
PostPosted: Sun Nov 26, 2006 8:03 pm 
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Joined: Sat Sep 09, 2006 12:51 pm
Posts: 20
Location: Oregon
Okay, count me in!

How 'bout...

1. Hauckite
2. Virgilite
3. Iolite
4. Vesuvianite
5. Bastnasite
6. Idocrase
7. Leucite
8. Maw-Sit-Sit
9. Realgar


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PostPosted: Sun Nov 26, 2006 8:04 pm 
1.Clinohumite
2.maxixe beryl
3 Iolite
4. Epidote
5 Bastnasite
6 Idocrase
7. Petalite
8. Maw-sit-sit
9 Realgar


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PostPosted: Sun Nov 26, 2006 8:10 pm 
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OK, this is obviously a tough one. No real clear-cut exact answers but I'm going to give Ivt number 4. It's actually Manganvesuvianite but that may be splitting hairs. So...

1
2
3 Iolite
4 Manganvesuvianite
5 Bastnasite
6 Idocrase
7 Leucite
8 Maw-Sit-Sit
9 Realgar

Only two left! Hope you get them before I go to bed.

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PostPosted: Sun Nov 26, 2006 8:12 pm 
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Just a wee thought.
Perhaps using some of the clues would help.
Example
Stone number 1 has an R.I. of 1.63 and it Uniaxial Negative.
That means it couldn't be Topaz because topaz is Biaxial Positive
Couldn't be Fire Opal
Couldn't be sapphire
Couldn't be a variety of feldspar
I've never heard of haukite
Couldn't be clinohumite: Biaxial positive

:idea: Perhaps checking some of the guesses against the properties of the stones might be a good idea


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PostPosted: Sun Nov 26, 2006 8:17 pm 
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Thank you, Barbra. Once or twice I typed similar thoughts but it sounded preachy so I didn't post them (usually when I get preachy I'm wrong!).

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PostPosted: Sun Nov 26, 2006 8:22 pm 
1 African Spinell
2 benitoite
3 Iolite
4 Manganvesuvianite
5 Bastnasite
6 Idocrase
7 Leucite
8 Maw-Sit-Sit
9 Realgar


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PostPosted: Sun Nov 26, 2006 8:25 pm 
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Spinel is SR (this one is DR U+).
Benitoites RI is in the 1.76 to 1.80 range (this one is 1.52).

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PostPosted: Sun Nov 26, 2006 8:27 pm 
GTP Bill wrote:
Spinel is SR.
Benitoites RI is in the 1.76 to 1.80 range.

I don't know what SR means ---

As I said I can't find anything Bluein the range of RI 1.52 so I just guess wild !


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PostPosted: Sun Nov 26, 2006 8:30 pm 
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SR means singly refractive
Like garnet and spinel.
They are both cubic crystals.
Uniaxial crystals will be in the
tetragonal. hexagonal or trigonal systems


Last edited by Barbra Voltaire, FGG on Sun Nov 26, 2006 8:34 pm, edited 1 time in total.

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PostPosted: Sun Nov 26, 2006 8:31 pm 
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Okay, I'll play again:

1. Scapolite
2. Apatite
3. Iolite
4. Manganvesuvianite
5. Bastnasite
6. Idocrase
7. Leucite
8. Maw-Sit-Sit
9. Realgar


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PostPosted: Sun Nov 26, 2006 8:32 pm 
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Sorry. SR means singly refractive. I have to admit these two are pretty hard (2 more than 1). I suppose if you don't have the information available your only recourse is to guess.

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PostPosted: Sun Nov 26, 2006 8:35 pm 
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MoDo, these should be rare enough for you (if not, you can WIN!!) but:

1) Scapolite tops out around 1.58 in RI (#1 is 1.63)

2) Apatite is around 1.63 for RI (#2 is 1.52).

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PostPosted: Sun Nov 26, 2006 8:42 pm 
1 Amblygonite
2 BOWENITE
3 Iolite
4 Manganvesuvianite
5 Bastnasite
6 Idocrase
7 Leucite
8 Maw-Sit-Sit
9 Realgar


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PostPosted: Sun Nov 26, 2006 8:46 pm 
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Crystallize, no sorry on both.

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