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Bob Harman
Joined: 06 Nov 2015
Posts: 765
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 Posted: Jun 12, 2016 07:05 Post subject: Re: A mineralogical trip through the states of USA - Arkansas |
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Found on an Arkansas table several years ago this example was different from all the rest.
| Mineral: | Quartz (Japan Law twin) |
| Locality: | | Wegner Quartz Crystal Mines, Mount Ida, Montgomery County, Arkansas, USA |  |
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| Dimensions: | specimen is 6.5 cm, largest quartz crystals are 2.5 cm |
| Description: |
| Clay or shale inclusions in quartz. So called blue phantom quartz.The 2 largest crystals are an example of Japan Law twinning. |
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| Viewed: |
32572 Time(s) |
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| Mineral: | Quartz (Japan Law twin) |
| Locality: | | Wegner Quartz Crystal Mines, Mount Ida, Montgomery County, Arkansas, USA | |
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| Dimensions: | specimen is 6.5 cm, Largest quartz crystals are 2.5 cm |
| Description: |
| Shale or clay inclusions in quartz. So called blue phantom quartz. The 2 largest crystals are an example of Japan Law twinning. |
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| Viewed: |
32649 Time(s) |
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GneissWare
Joined: 07 Mar 2008
Posts: 1287
Location: California
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| Posted: Jun 13, 2016 22:17 Post subject: Re: A mineralogical trip through the states of USA - Arkansas |
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| Very cool piece!
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Jordi Fabre
Overall coordinator of the Forum
Joined: 07 Aug 2006
Posts: 5089
Location: Barcelona
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| Posted: Jul 30, 2017 06:40 Post subject: Re: A mineralogical trip through the states of USA - Arkansas |
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A nice rock with an even nicer label ;-)
| Mineral: | Wavellite on Quartz |
| Locality: | | Mauldin Mountain Quarries, Mauldin Mountain, Montgomery County, Arkansas, USA | |
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| Dimensions: | 7 × 3.2 × 2.9 cm |
| Description: |
Size of the main ball of crystals: 0.6 × 0.6 cm
Former collection of John. S. White |
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| Viewed: |
29232 Time(s) |
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| Mineral: | Wavellite on Quartz |
| Locality: | | Mauldin Mountain Quarries, Mauldin Mountain, Montgomery County, Arkansas, USA | |
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| Dimensions: | Main ball of crystals: 0.6 × 0.6 cm |
| Description: |
| Former collection of John. S. White |
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| Viewed: |
29170 Time(s) |
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| Description: |
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| Viewed: |
29225 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4250
Location: Germany
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| Posted: Oct 22, 2017 11:08 Post subject: Re: A mineralogical trip through the states of USA - Arkansas |
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Not the first (and I guess not the last) clear quartz in this thread ;-)
| Mineral: | Quartz (var. Rock Crystal) |
| Locality: | | Mount Ida, Montgomery County, Arkansas, USA | |
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| Dimensions: | Specimen height 20,5 cm |
| Description: |
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| Viewed: |
28129 Time(s) |
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