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31 Jul-22:40:40 Corona covid-19 virus - what is it ? where is it from ? (Roger Warin)
31 Jul-16:32:56 Re: collection of firmo espinar (Firmo Espinar)
30 Jul-14:58:22 Re: melanophlogite? (Luiz Oliveira)
30 Jul-14:51:23 Re: about a rutile epitaxy on hematite in quartz (Roger Warin)
30 Jul-03:36:43 The mizunaka collection - quartz (Am Mizunaka)
29 Jul-22:49:31 Re: collection of volkmar stingl (Volkmar Stingl)
29 Jul-21:35:18 Re: about a rutile epitaxy on hematite in quartz (Alfredo)

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Unknown quartz?
  
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R Saunders




Joined: 28 Jul 2018
Posts: 110
Location: Michigan


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PostPosted: Jul 28, 2021 15:43    Post subject: Unknown quartz?  

With further study it is a mineral with quartz crystals in the voids. A purchased item with no information.


20210728_131213.jpg
 Mineral: Quartz stone
 Dimensions: 13 cm x 10 cm
 Description:
 Viewed:  235 Time(s)

20210728_131213.jpg



20210728_153010.jpg
 Description:
 Viewed:  236 Time(s)

20210728_153010.jpg



20210728_152621.jpg
 Description:
 Viewed:  235 Time(s)

20210728_152621.jpg



20210728_131436.jpg
 Description:
 Viewed:  234 Time(s)

20210728_131436.jpg



20210728_152621.jpg
 Description:
 Viewed:  234 Time(s)

20210728_152621.jpg


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SteveB




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PostPosted: Jul 28, 2021 21:24    Post subject: Re: Unknown quartz?  

Chalcedony. Which is a form of quartz.
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