Red Rock

Eureka Black

Tenderfoot
Jun 2, 2024
8
3

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Quartzite or a red chalcedony.
(In the picture, it looks like a top round roast) 😊
Chalcedony, agate, flint, are all crypto crystaline. Crypto means “hidden” and not visible to the naked eye. The OPs rock has definite crystals showing. I’ll stick with quartzite for this one.
 

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Chalcedony, agate, flint, are all crypto crystaline. Crypto means “hidden” and not visible to the naked eye. The OPs rock has definite crystals showing. I’ll stick with quartzite for this one.
I wasn’t certain if I was seeing crystal flakes, or if the lighting was causing an effect. Quartzite is the better choice.👍🏼
 

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Feldspar?

If it is, it'll be softer than quartzite.

Getting a hardness will sometimes help in identifying minerals.
1717501718312.jpeg

Quartz, quartzite = 7
Feldspar = 6.0-6.5
 

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