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I want to know this stone
  
  Index -> What is it? - Where is it from?
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ALshawani




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PostPosted: Feb 23, 2021 16:12    Post subject: I want to know this stone  

I didn't recognize the stone yet, the density of stone from 2.60 to 2.99
The hardness is higher than 8.5



٢٠٢١٠٢٢٣_١٨٢٩٣٧.jpg
 Mineral: don't Know
 Description:
West of Libya
4.5*3
I didn't recognize the stone yet, the density of stone from 2.60 to 2.99
The hardness is higher than 8.5
 Viewed:  1521 Time(s)

٢٠٢١٠٢٢٣_١٨٢٩٣٧.jpg


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ALshawani




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PostPosted: Feb 23, 2021 16:15    Post subject: Re: I want to know this stone  

This is the same type


٢٠٢١٠٢٢٣_١٨٣١٥٣.jpg
 Mineral: don't Know
 Description:
West of Libya
4.5*3
 Viewed:  1520 Time(s)

٢٠٢١٠٢٢٣_١٨٣١٥٣.jpg


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Bob Carnein




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PostPosted: Feb 23, 2021 16:16    Post subject: Re: I want to know this stone  

It looks, to me, like a piece of quartzite. How did you measure the hardness?
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ALshawani




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PostPosted: Feb 23, 2021 16:44    Post subject: Re: I want to know this stone  

with Masonry Drill Bit
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kushmeja




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PostPosted: Feb 23, 2021 16:56    Post subject: Re: I want to know this stone  

Looks like carnelian or sard, which are basically just slightly different forms of Quartz. But they wouldn't be an 8.5 hardness and should be closer to 7. An 8.5 hardness is quite high, so I would try verifying the hardness with something aside from the masonry bit if you can.
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alfredo
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PostPosted: Feb 23, 2021 17:08    Post subject: Re: I want to know this stone  

Being as opaque as it is, I'd call it jasper, although the boundaries between quartz varieties are rather fuzzy.
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James Catmur
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PostPosted: Feb 24, 2021 03:33    Post subject: Re: I want to know this stone  

Does it scratch normal glass?
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ALshawani




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PostPosted: Feb 24, 2021 06:16    Post subject: Re: I want to know this stone  

I tried the knife and the screw and finally the bit of the drill, and they were all scratched by the stone. The thing that revived me the most is the hardness of the stone.
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ALshawani




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PostPosted: Feb 24, 2021 06:18    Post subject: Re: I want to know this stone  

Yes it scratches the glass
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ALshawani




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PostPosted: Feb 24, 2021 06:27    Post subject: Re: I want to know this stone  

The stone is translucent to translucent. Perhaps some external impurities are affecting the transparency


٢٠٢١٠٢٢٤_١٣٢٠٢٤.jpg
 Description:
 Viewed:  1335 Time(s)

٢٠٢١٠٢٢٤_١٣٢٠٢٤.jpg


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ALshawani




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PostPosted: Feb 28, 2021 15:50    Post subject: Re: I want to know this stone  

What tools are available at home that can measure the hardness of any stone? What is the degree of hardness of each tool?
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Volkmar Stingl




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PostPosted: Mar 01, 2021 01:04    Post subject: Re: I want to know this stone  

All simple methods for mineral identification are listed here:
https://www.mineral-forum.com/message-board/viewtopic.php?p=19487#19487
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