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Author Topic: Blue mineral, or just quartz?  (Read 3060 times)

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Sifu

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Blue mineral, or just quartz?
« on: May 12, 2016, 02:46:07 PM »

So, found some of this in some washes in the Succor Creek area. Just botryoidal crypto quartz? Or???
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Orrum

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Re: Blue mineral, or just quartz?
« Reply #1 on: May 12, 2016, 06:07:01 PM »

Don't know but waiting to see, welcome to the forum!
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Ranger_Dave

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Re: Blue mineral, or just quartz?
« Reply #2 on: May 12, 2016, 06:29:20 PM »

How hard/soft is it. Looks like calcite to me.
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peruano

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Re: Blue mineral, or just quartz?
« Reply #3 on: May 19, 2016, 08:24:34 AM »

It may be a cryptocrystalline quartz/chalcedony product, and is likely to be if you can sand the white color off and find a darker color beneath.  If its equally white and same texture inside as it appears outside, its likely a calcium material subject to acid.  Just guessing.  Tom 
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Combining a love of bikes (pedal and otherwise) with hiking, hounding, lapidary, and the great outdoors

jakesrocks

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Re: Blue mineral, or just quartz?
« Reply #4 on: May 19, 2016, 08:37:29 AM »

Put a couple drops of white vinegar on a spot & see if it bubbles. If yes it's calcite. If no, it's probably quartz.
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A day spent without learning something new is a day wasted.

Redwilder

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Re: Blue mineral, or just quartz?
« Reply #5 on: May 19, 2016, 08:31:29 PM »

Ive come across quite a bit of this in the Succor Creek area. What you have here is a botryoidal agate with a thin calcium based mineral coating. The white coating will come off in acid leaving the agate exposed. Fun stuff to see!
 
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Ranger_Dave

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Re: Blue mineral, or just quartz?
« Reply #6 on: May 19, 2016, 08:56:26 PM »

Ah, so I was kind of, almost, close to getting it right.  :grin:  That should look awesome when cabbed. I'll have to get some and try it.
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