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Author Topic: Got me stumped  (Read 2634 times)

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Jhon P

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Got me stumped
« on: July 10, 2017, 06:55:51 AM »

My brother is a contractor in Fresno ca and part of his business is taking over foreclosures, cleaning them up and getting them ready to sell. He is always looking for rocks for me and he brought me a bucket full and this was in there. I thought that it was howlite but is is close to a 7 hardness and doesn't look like it. Any ideas?
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edgarscale

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Re: Got me stumped
« Reply #1 on: July 10, 2017, 02:34:33 PM »

could it be corpolite? hope that's the right word for dino dung.
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50% rockhound and 50% wire wrap
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Jhon P

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Re: Got me stumped
« Reply #2 on: July 10, 2017, 08:46:16 PM »

Maybe? It looks a little like a turd.
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SkySgt

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Re: Got me stumped
« Reply #3 on: November 18, 2017, 07:41:59 PM »

Dino doo-doo is coprolite.

https://en.wikipedia.org/wiki/Coprolite

I can't exactly tell from the photo, but it looks a little dendritic to me.  Are those darker lines dendrites?
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bobby1

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Re: Got me stumped
« Reply #4 on: November 18, 2017, 09:31:11 PM »

The outer surface makes it look like magnesite
Bob
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vitzitziltecpatl

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Re: Got me stumped
« Reply #5 on: November 19, 2017, 07:50:10 AM »

Magnesite sounds like a bullseye. I wouldn't have thought of it without bobby1's comment, but the color is similar to the color of magnesite (or lemon) chrysoprase.

zurn

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Re: Got me stumped
« Reply #6 on: February 10, 2018, 10:38:46 AM »

Ive had Howlite the outer surface looked like that and cut sometimes white to grey to spotted black
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finegemdesigns

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Re: Got me stumped
« Reply #7 on: February 10, 2018, 11:21:06 AM »

Magnesite. The pure white material from Nevada is known as Pristine Magnesite.

https://www.youtube.com/watch?v=BHkpG5KQjAw
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Slabbercabber

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Re: Got me stumped
« Reply #8 on: February 10, 2018, 03:55:15 PM »

Magnesite is only mohs 3.5 to 4.5.
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Jhon P

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Re: Got me stumped
« Reply #9 on: February 11, 2018, 07:11:19 AM »

Hardness is what has me stumped. It is closer to 7 maybe 6 1/2.
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hummingbirdstones

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Re: Got me stumped
« Reply #10 on: February 11, 2018, 02:48:08 PM »

Perhaps a common opal?  What type of fracture does it have?
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Robin

Jhon P

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Re: Got me stumped
« Reply #11 on: February 11, 2018, 07:10:35 PM »

Not opal.
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finegemdesigns

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Re: Got me stumped
« Reply #12 on: February 11, 2018, 11:19:07 PM »

Magnesite is only mohs 3.5 to 4.5.

Pristine appears to be harder and might be silicated to some extent. Takes a good polish also.
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finegemdesigns

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Re: Got me stumped
« Reply #13 on: February 11, 2018, 11:20:34 PM »

Hardness is what has me stumped. It is closer to 7 maybe 6 1/2.

Really? Can you scratch a clear quartz crystal with it? What about scratching a glass bottle?
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Jhon P

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Re: Got me stumped
« Reply #14 on: February 12, 2018, 06:57:36 AM »

I have a MOH’s hardness testing kit. I can barely scratch it with #7  cannot scratch it with a #6
But it sure looks like a howlite nodule on the outside to me. The piece that I cut off took a good polish. Maybe it is a jasper nodule?
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