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Darren
Joined: 09 Aug 2009
Posts: 91
Location: New Mexico
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 Posted: Sep 20, 2009 22:35 Post subject: Jarilla Mountains, Orogrande, Otero County, New Mexico, USA Andradite and Hematite |
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Over the last few months I have had the opportunity to collect a few times in the Jarilla Mountains in Otero County, New Mexico. Mines in this small range have produced gold (at least 2 "rushes", with extensive mining to begin this fall), Copper, Iron Ore and Turquoise. The intrusives that emplaced the economic deposits also created extensive skarns, and one location, in particular, continues to produce spectacular hematite and very nice andradite.
In addition, another location nearby has very nice epidote and actinolite and I'll try to post about that later, but for now, some of the recent hematite and andradite.
There is an open cut, or pit, that produces these. One looks for blocks of coarsely-crystalline garnet shot-through with calcite veins. Treating the pieces with calcite exposes the minerals. In addition, digging in the pit, you find large "nodules" of a garnet/calcite mix that, when acid-treated, exposes the andradite. Hope you enjoy these!
Some were taken by my wife (the family photographer!) in natural light, and some were taken in artificial light - so please be kind!!!!!
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| 3 cm pocket of small andradite |
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14645 Time(s) |
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| 3 cm andradite-hematite-quartz piece |
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14606 Time(s) |
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| 2.5 cm picec with andradite |
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14593 Time(s) |
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| 3 cm piece with small andradites |
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14578 Time(s) |
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| Nice golden-colored andradite on a 6 cm piece |
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14595 Time(s) |
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| 8 cm piece with etched andradite and quartz |
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14594 Time(s) |
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14615 Time(s) |
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| Another view of the previous |
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14539 Time(s) |
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| Choice 6 cm group of small hematite rosettes |
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14588 Time(s) |
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| Choice miniature, 4 cm, of scultural hematite rosettes |
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14557 Time(s) |
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| Another view of the above |
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14548 Time(s) |
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| Great andradite in deep vugs |
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14597 Time(s) |
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Darren
Joined: 09 Aug 2009
Posts: 91
Location: New Mexico
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| Posted: Sep 20, 2009 22:38 Post subject: Re: Jarilla Mountains, Orogrande, Otero County, New Mexico, USA Andradite and Hemati |
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Here are a few more!
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| A 15 cm piece of andradite-hematite-chlorite-quartz. Much cleaner than it appears in the photo! |
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14639 Time(s) |
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| Large 12 piece with andradite and hematite |
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14612 Time(s) |
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Darren
Joined: 09 Aug 2009
Posts: 91
Location: New Mexico
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| Posted: Sep 20, 2009 22:39 Post subject: Re: Jarilla Mountains, Orogrande, Otero County, New Mexico, USA Andradite and Hemati |
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| More Orogrande stuff coming tomorrow! thanks for taking a look!
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5025
Location: Barcelona
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| Posted: Sep 21, 2009 01:28 Post subject: Re: Jarilla Mountains, Orogrande, Otero County, New Mexico, USA Andradite and Hemati |
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Very interesting Darren, thanks to share with us.
Some chance to see photos of the mining area or of the Calcite-Garnets as them appear in the skarn?
Jordi
_________________
Audaces fortuna iuvat |
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