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Rockhounds attention

 
 
Reply Fri 14 Feb, 2014 01:40 pm
FarmerMan in another thread with my thanks
http://able2know.org/topic/234944-1#top
discussing some of my own very favorite rocks; meteorites, howlite, etc

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what youre looking at in a meteorite is the adjacent plotzing of taenite and kamacite. One has a Ni ( >30%) and iron of (,50%) and the other has an iron of (>70%) and Ni(,20%). …...really neat looking.
Your ed. in these matters far exceeds mine

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You should polish to 2000 grit and then Al rouge buff.
I don 't even remember the exact sequence but I do remember using at least two grits before the final polish

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(I always send any samples out to get done.
I was far too cheap

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I have no patience in doing thin sections or any kind of polishing any more.
For some reason I too quit that sort of thing, don't know why, when we moved here (Apple Valley, Ca) some 16 years past

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It a skill Ive never acquired and I usually need mineral results reported within 3 or 4 days after discovering them in the field.
I might have been happier with ed. and career in that field than in just the writing end of it
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farmerman
 
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Reply Fri 14 Feb, 2014 07:42 pm
@dalehileman,
Id send samples out because I was usually doing an analyses of the mineral contents for clients.

Have you ever collected some of the desert opals from the US west? I found some really nice ones near Needles ( hydrothermal depoit) over 20 years ago and Ive had em in a water filled jar with a bit of glycerol to keep em from drying out and losing their fire.
dalehileman
 
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Reply Sat 15 Feb, 2014 02:23 am
@farmerman,
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Have you ever collected some of the desert opals from the US west?
Nah, I've found a few chalcedonies slightly opaline but nothing very exciting

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…... Ive had em in a water filled jar with a bit of glycerol…..
Thanks I'll remember that should I ever get back into collecting then find one
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Rockhound attention - Question by dalehileman
Rockhound attention - Question by dalehileman
 
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