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Let's Rock => Identifications of Materials => Topic started by: lflock on March 18, 2018, 07:51:59 AM

Title: What are they? Opal, jasper, quartz...
Post by: lflock on March 18, 2018, 07:51:59 AM

 [ You are not allowed to view attachments ] I have a couple of stones (ha-ha) I would like your opinion on. From Central Mexico, harder than 5 (don't have anything around harder to test with than my pocketknife). The blueish/purplish I believe is opal. One is the stone and the 2nd is a closeup. I haven't found anything like them online. The third, I have no idea. Looks like quartz with adularescence and various colors, but, once again, can't find anything online that resembles it.  [ You are not allowed to view attachments ]  Thanks for any help. If you have questions, please ask and I'll do my best to answer.

Title: Re: What are they? Opal, jasper, quartz...
Post by: irockhound on March 18, 2018, 09:54:44 PM

First is a Sagenite Agate with a little Quartz on one end.  The white needle like structure you see on the agate side of those brown areas are the sagenite needles.  The Second piece is a bit of Moss Agate, both very nice.

Title: Re: What are they? Opal, jasper, quartz...
Post by: lflock on March 19, 2018, 10:13:23 AM

Thank you for your reply irockhound.

Title: Re: What are they? Opal, jasper, quartz...
Post by: lflock on March 23, 2018, 09:54:55 AM

Per irockhound's suggestion, here is the same type of material, but dry. [ You are not allowed to view attachments ]  [ You are not allowed to view attachments ]

Title: Re: What are they? Opal, jasper, quartz...
Post by: Kaljaia on March 26, 2018, 08:06:39 AM

Yeah that second one looks like it'd be a nice red moss agate.

Title: Re: What are they? Opal, jasper, quartz...
Post by: lflock on April 17, 2018, 09:33:17 AM

Is it possible the first, the agate/quartz is Ferruginous quartz?