ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Sept 22, 2022 12:36:58 GMT -5
So, I lucked out and bought someone's entire huge rock collection, so I may be posting more in the ID forum The whole collection is very well organized into bins and crates. These agates are just one small bucket of the lot. I've not seen any like them, and the man's son said that he had always been told that there were s bunch of rocks from Hawaii in the lot. Well, the lot is mostly Mexican Lace agates and jaspers, so I don't know what could be from Hawaii. But, this bucket did have some coral and lava-looking rocks in it. Here is the pile with my hand for scale:  Most of them are clear or pale yellow and several have red bands    Here are the coral and lava-like rocks:   |
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Post by fernwood on Sept 22, 2022 13:12:50 GMT -5
The first bunch looks like desert chalcedony.
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Post by rockpickerforever on Sept 22, 2022 14:03:58 GMT -5
Agree. The first ones are chalcedony, not agate. The second to last ones, are definitely lava.
The top one of the two may be pumice. Is it light for it's size? Does it float?
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Sept 23, 2022 9:05:38 GMT -5
The first bunch looks like desert chalcedony. That's great! Thanks! After I posted this, I found some much larger, more interesting ones in another bucket! |
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Sept 23, 2022 9:07:55 GMT -5
Agree. The first ones are chalcedony, not agate. The second to last ones, are definitely lava. The top one of the two may be pumice. Is it light for it's size? Does it float? No, it doesn't float, so I guess it's lava? That's funny that perhaps those few lava rocks were reason for some fascination for the family for years. But I have lots more to post that I don't recognize. |
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Post by pebblesky on Sept 23, 2022 10:39:37 GMT -5
The first bunch looks like desert chalcedony. That's great! Thanks! After I posted this, I found some much larger, more interesting ones in another bucket! Would love to see pictures of these! |
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Sept 23, 2022 19:34:47 GMT -5
Ask and you shall receive, pebblesky . Here's how it all went down: Me, rushing in the house with handfuls of rocks. My husband:What are you up to? Me: People want to see my rocks! LOL Funny cause it's true  This one looks like a Rolling Stones lips and tongue to me  Nice little trinket dish  Bands and botryroids (is that a word?)  This one's kind of a hot mess  This one's kind of R rated  I love this one  |
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Post by pebblesky on Sept 23, 2022 19:37:24 GMT -5
These look so great! Hope your husband understand😄
The black R rated one is so special!
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Sept 23, 2022 19:55:20 GMT -5
These look so great! Hope your husband understand😄 The black R rated one is so special! They are really interesting! No, he doesn't understand - just don't tell him I'm posting R rated stuff on the internet! |
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Post by pebblesky on Sept 23, 2022 20:17:51 GMT -5
These look so great! Hope your husband understand😄 The black R rated one is so special! They are really interesting! No, he doesn't understand - just don't tell him I'm posting R rated stuff on the internet! My husband the same  |
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Post by vegasjames on Sept 24, 2022 0:45:30 GMT -5
The first ones are chalcedony. The last two look like they could be fulgurites.
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
|
Post by ericabelle on Sept 24, 2022 11:37:05 GMT -5
The first ones are chalcedony. The last two look like they could be fulgurites. That would be so awesome to have some fulgurites |
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quartzilla
Cave Dweller 
Member since April 2020
Posts: 1,240
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Post by quartzilla on Sept 24, 2022 20:28:31 GMT -5
Wow those are rad! It’s tough finding whole roses like The Rolling Stones lips one in the field these days.
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Post by 1dave on Sept 25, 2022 16:13:17 GMT -5
Chalcedony is a microcrystalline variety of quartz that has a fibrous morphology. It is most commonly length-fast, implying that the fibers are elongated perpendicular to the c axis of quartz(e.g.Graetsch,1994).   Length-slow chalcedony, composed of fibers elongated parallel to the c-axis (e.g. Miehe et al., 1984), is more rare and has been related to conditions with high alkalinity (eg. Folk &Pittman, 1971; Arbey, 1980; English, 2001; Bustillo 8; Alonso-Zarza, 2007), although this has to be done with caution (Keene, 2006). An alternation of Length-fast and length-slow chalcedony in vug infillings may reflect fluctuations in pore water composition (Summerfield, 1983b). The tendency of increasing crystal size towards vug centres suggests a declining rate of flow of si|ica—bearing solutions, in response to progressive void infilling and porosity reduction.  Brazil Twinning is caused by iron atoms entering and disrupting the crystal structure. In Desert Roses, the fibers begin twisting and turn into curly worms and blobs.    |
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quartzilla
Cave Dweller
Member since April 2020
Posts: 1,240
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Post by quartzilla on Sept 25, 2022 17:04:13 GMT -5
Thanks 1dave that growth flow chart is very helpful in under the formation of chalcedony and desert roses. |
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Post by 1dave on Sept 25, 2022 18:08:27 GMT -5
Thanks 1dave that growth flow chart is very helpful in under the formation of chalcedony and desert roses. Thanks, but still so much to learn! For fifty years I was an all volcano guy. Then I started recognizing IMPACT MELTS. It has only been the last couple of years that I began learning about earthquake melts! The above happens at low temperatures! Each repeat is a new fill sequence. res.cloudinary.com/crosbj/image/upload/v1664130027/Chemestry/SiO2/EQ-6_padnhd.jpgSilica crystals of all types - opal, agate, Quartz, tridymite, cristobalite, stishovite, all smash together and break electromagnetic bonds that instantly attach to ground water H and HO ions! The water becomes filled with silica jell and chalcedony and moganite etc. fragments that begin combining in any and every available space, making desert roses, petrified bone and wood, filling ground fractures, veins, geodes and thundereggs. |
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ericabelle
spending too much on rocks
Instagram acct: @erica_shoots_everything
Member since April 2021
Posts: 482
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Post by ericabelle on Sept 27, 2022 20:09:22 GMT -5
Thanks, 1dave , that is very helpful! I was wondering how the chalcedony made such ooey gooey forms in the desert! |
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Post by 1dave on Sept 29, 2022 11:34:20 GMT -5
Thanks, 1dave , that is very helpful! I was wondering how the chalcedony made such ooey gooey forms in the desert! Mother Nature is very helpful when she is in a good mood.  |
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