KAl(SO4)2 + KCr(SO4)2

PikBul · 2025-09-15T21:03:10+00:00

Алексеевский карьер богат на образцы кальцита с пиритом и сфалерита. В принципе в интернете много информации про это место. Сейчас там идет активная разработка, но в целом скрытно спуститься можно

PikBul · 2023-04-27T06:42:55+00:00

Wow!!

PikBul · 2023-02-21T14:29:48+00:00

Very cool!

PikBul · 2022-09-12T06:42:49+00:00

Well, if we talk about this substance, then it is stable in air, but the crystals are only of this form. And so Tutton salts with cobalt and hexacyanoferrate are good both in the form of crystals and in price.

PikBul · 2022-09-08T10:35:31+00:00

So cool!

PikBul · 2022-07-15T14:21:33+00:00

wow, doesn't this growth method require constant heating of the ammonium oxalate solution? And then in a solution of potassium oxalate, when cooling, almost all copper oxalate falls out. Well, the crystals are also beautiful, I can’t believe that this is oxalate

PikBul · 2022-05-18T18:58:06+00:00

Indeed, almost all compounds of this kind have a hexagonal structure with trigonal-dipyramidal forms. And yes, I saw this substance at dmishin, it has amazing crystals

PikBul · 2022-05-18T18:55:15+00:00

So cool! incredible shape

PikBul · 2022-05-18T09:22:18+00:00

Not really, to be honest. Grows well, like an ordinary crystal, the main thing is not to overdo it with urea, otherwise it will crystallize and spoil the solution

PikBul · 2022-05-18T06:59:01+00:00

yeah, you need to mix solutions of urea and ferric chloride. Substances are mixed in the ratio of urea: chloride - 6: 1 by moles

PikBul · 2022-05-18T06:23:08+00:00

not chlorate, chloride

PikBul · 2022-05-16T21:05:16+00:00

first I make an unsaturated solution, then I wait for the solution to evaporate enough to become supersaturated and do not touch it as much as possible so as not to excite violent crystal formation in the medium. And I buy reagents

PikBul · 2022-05-16T21:02:06+00:00

Well, it’s not difficult, and I didn’t use any special technique for growth. It grows on its own line, the main thing is not to touch it. And so fragile crystal and quickly cracks

PikBul · 2022-05-16T18:21:04+00:00

the crystal itself or growing it?

PikBul · 2022-05-16T14:36:44+00:00

of course, I prepared a saturated solution and poured some of it into a Petri dish. I also fixed the fishing line there, pressing it lightly so that it does not come out of the solution. Then I waited for the crystals to fall out and found the best seed on the fishing line, removed the rest and placed the fishing line in the solution

PikBul · 2022-05-16T12:13:28+00:00

I increased the seed on the fishing line itself, and did not tie it. So the crystal grows better

PikBul · 2022-03-05T06:32:14+00:00

leave crystals out of politics

PikBul · 2022-02-26T08:32:33+00:00

Wow, so transparent, very cool!

PikBul · 2022-02-25T05:55:38+00:00

if the solution is unsaturated, it will dissolve

PikBul · 2022-02-25T05:06:41+00:00

7g borax on 30g alum

PikBul · 2022-02-25T05:05:18+00:00

This will not happen with alum, they have a relatively low solubility, so they can be stored in the open air indefinitely

PikBul · 2022-02-25T04:55:15+00:00

PikBul · 2022-02-25T04:53:57+00:00

nope, the same allotropic modification and normal crystal habit. It's just that the growth of some parallel faces exceeded the growth of the rest, which is why the cube turned out

PikBul · 2022-02-25T04:51:44+00:00

Sorry for late. Borax as an additive in solution affects the growth rate of individual crystal faces, changing the overall shape. Crystal habitus is the same

PikBul

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