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Coldberry Millerite Spray - please help value

Posted by Roger Curry  
Roger Curry October 08, 2012 04:40PM
Hi all,

I would like to know how much this specimen is worth -

Millerite spray, to 1.5 centimeters (0.6 inch), Coldberry Gutter, Teesdale, England.

As you can see, my still camera isn't up to much, so please take 50 seconds to view this youtube video

Thanks in advance,
Rock Currier October 09, 2012 06:12AM
About $100?

Rock Currier
Crystals not pistols.
Roger Curry October 09, 2012 12:02PM
Hi Rock,
Thanks very much for your time & expert opinion,
Kind regards, & cheers!
Tim Jokela Jr October 14, 2012 09:29PM
I collected millerite for a while, and have always been fond of those coaltip concretion millerites.

They've always struck me as being rare and lovely, much like the gemmy Elk Creek SD barites from similar if larger concretions, or the wurtzites from the PA concretions. To break a hard concretion and expose such a fragile mineral... so cool.

Common mineral, yet not common in decent display specimens like this one.

I'd ask at least $150 for it. High end dealer at a high end show... double at least. Maybe 3x.

I mean, when do you ever see a UK millerite? Maybe they're abundant on that side of the pond, but not over here.

Pristine and lovely miniatures of top quality are commanding spectacular prices these days.
Roger Curry October 14, 2012 10:41PM
Hi Tim,

They're far from abundant at this side of the pond. I was lucky with this one, and a lot younger, but risking your life up an unstable scree whacking open ironstone nodules was fun, even though you had to break a hell of a lot, before you got a decent one with internal crystallisation. Siderite blades usually, but occasionally one like the above, with unusual quartz crystals - some sceptered, with an etched base prism, and surrounded by granular crystals of kaolinite. Spectacular under a stereo microscope. Very occasionally you get scattered millerite filaments and rough nests, but this is my best find.

Thanks for your input on the value of the specimen Tim,
Robert W. E. Neilson December 05, 2012 02:56PM
I saw a flat of these Coldberry millerites at the last Sussex Mineral show. I seem to recall they were around £50 each.
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