Identify?

by T. Blanchard
(T or C, NM, USA)

These are specimens found in SW Colorado. One has a 'geode' crystalline structure inside, the others are smooth inside. Each are parts of a larger piece.

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Apr 22, 2017
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Maybe quartz?
by: Lapidary Whisperer

I'm only commenting on the specimen in the lower right corner. It looks like botryoidal quartz to me. Many minerals other than the ones you've named can be botryoidal and very pretty. Check out this site for images of many beautiful botryoidal minerals http://www.minerals.net_search_results.aspx?q=botryoidal

Apr 21, 2017
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geodes with botryoidal crystals
by: Doug

The pictures have minerals with botroydal crystals. I can't say for sure what mineral it is from a photo but here are some possibilities that have been found around Saguache, CO:

Aragonite- this is a soft mineral
agate- very hard this is my first guess

other minerals with botroydal crystals are hematite and malachite

Here are 2 websites with information about minerals in that area:

http://coloradogeologicalsurvey.org/mineral-resources/historic-mining-districts/saguache-county/
and

https://www.mindat.org/mesg-5-2228.html

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