[Rockhounds] Newly published Agate and Jasper book

[Kreigh Tomaszewski]

Veva,

Years ago I picked up an old laboratory balance, two pan, that can be 
mounted on a lab stand and be elevated. I made a little wire jig that 
snaps over one of the pans so I can hang a specimen below the pan for 
weighing in water. Works great for taking specific gravity. The best 
part was that the old laboratory balance only cost me $10 (I spent a 
whole lot more upgrading to a complete set of accurate masses).  I 
think it was made in the 1930s, and it will probably outlast me. Those 
old cast iron and brass units with porcelain trays  and agate balances 
are practically unbreakable if you use at least a minimum of care. They 
also are accurate to a milligram if you have good masses. If you are 
looking for cheap, it is a good alternative to consider.

Oh, and before you get fancy, don't forget about streak and hardness. 
Often the simple tests are enough.

Kreigh


On Tuesday, Jun 9, 2009, at 23:40 America/Detroit, VevaBailey at aol.com 
wrote:

> Thank you Kreigh, for the info.
> The book is on the way!!!
> Now another question for the list.
> I want to purchase some testing equipment, specific gravity, 
> polariscope,
> refractometer, etc.
> Who would the best vendor for this equipment?
> I am on a limited budget, so I must get as much for my money as I can.
> My sister was out walking and brought home a piece of black, very black
> rock, it isn't lava or glass like, so I would like to test it to see 
> if it is
> onyx, jet or jade.
> Here in Nevada, it can could be any one of these stones. I haven't  
> tried
> to cut it yet, so I don't know how hard it would be to cut.
> Any help will be greatly appreciated.
>
> Veva Bailey
>
>
>
>
>
> In a message dated 6/9/2009 7:14:34 P.M. Pacific Daylight Time,
> Kreigh at tomaszewski.net writes:
>
> Here is  a link to the original post about the Agate and Jasper book in
> the List  Archives
>
> http://lists.drizzle.com/pipermail/rockhounds/2009-May/029070.html
>
> On  Tuesday, Jun 9, 2009, at 22:04 America/Detroit, VevaBailey at aol.com
> wrote:
>
>> Hi List;
>> I thought I saved the name of this  book and who authored it, but now 
>> I
>> can't find it.
>> I want to  purchase a copy.
>> Could someone tell me the name and author so I can  buy it?
>> There is nothing worse than to try to sell jewelry and not  know the
>> name of
>>  the stones!!
>> I want to Thank  all for helping me to be educated, by posting your
>>  pictures
>>  and remarks.
>>
>> Veva  Bailey
>>
>>
>>
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