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16 Aug-15:34:01 Re: help identification (Alfredo)
16 Aug-13:40:44 Quartz japan twin (Marco Campos-venuti)
16 Aug-13:04:01 Help identification (Fjbonfante)
16 Aug-12:18:43 Re: collection from dany mabillard (Dany Mabillard)
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16 Aug-04:30:00 Re: peridot on lapis ??? (Marco Campos-venuti)
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15 Aug-14:18:33 Sphalerite from Áliva mine, spain / #mvm (minerals - virtual museum) collection (Jordi Fabre)
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15 Aug-08:29:38 Re: 19 years of bugging you (and counting!) (Dany Mabillard)
14 Aug-16:27:35 Azurite and malachite from touissit, morocco / #mvm (minerals - virtual museum) collection (Jordi Fabre)
14 Aug-04:42:11 Re: 19 years of bugging you (and counting!) (Jordi Fabre)
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13 Aug-18:36:13 Re: curious fluorescent metamorphic rock (Fuss)
13 Aug-16:06:12 The mizunaka collection - quartz (Am Mizunaka)
13 Aug-10:31:36 Re: collection of michael shaw (Michael Shaw)
13 Aug-08:35:48 Re: curious fluorescent metamorphic rock (Bob Carnein)

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Help identification
  
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Fjbonfante




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PostPosted: Aug 16, 2025 13:04    Post subject: Help identification  
Hello everyone. I'm starting out in this wonderful world and I still don't have all the knowledge. I would like some help. I recently found this material in the state of Paraná, Brazil. It scratches quartz... what could it be?

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alfredo
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PostPosted: Aug 16, 2025 15:34    Post subject: Re: Help identification  
What is the color of the powder when you rub it on a piece of broken porcelain?
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