I have seen a lot of mineral things on by dashboard recently...

BUT GUYS

SERIOUSLY.

HOW COULD YOU MISS OUT ON FRICKING BISMUTH

I MEAN REALLY

THIS IS BISMUTH AND THIS IS NATURAL

NOT ONLY DOES IT FORM LIKE THIS, BUT YOU SEE THAT COOL-ASS COLOURING?

GODDAMN NATURAL LAYER OF OXIDISATION

Oh… and, erh… Bismuth contributed to early metallurgy in the form of Bismuth Bronze and was one of the first ten metals to be discovered, according to Wikipedia…
BUT LOOK IT LOOKS AMAZING

AND I THINK IT IS NECESSARY IN EVERY MINERAL OR METAL POST BECAUSE IT LOOKS AMAZING. JUST SAYING.

PEACE.

okay so this is a total psa, but i need to voice this it’s so important
the amount of face washes and routines and pimple remedies i have gone through, the amount of money and effort and time you spend and still end up with shitty ass skin or breakouts when you really don’t need them
THIS SHIT HERE THO

image


is a god send. put the smallest dot on any pimple and in a nigHT it will be either gone, or so ready to come out you barely need to touch it. 
you can put it on shitty looking scabs on your face and they will heal 10x faster, same thing with cold sores or cuts or grazes. you can put it on open wounds, you can use it for infected piercings, and the great thing is a tiny tube lasted me a whole year.
GO BUY SOME AND HAVE WONDERFUL SKIN
[side note: there are higher doses of hydrogen peroxide if your acne is real bad maybe go a 3%-6%, but for regular breakouts a 1% is perfect]

Finished brooch piece for my manufacturing techniques class!

For the backing sheet I used copper and etched the pattern on. I really love how well this etching came out! I then oxidised it to give it a weathered look and used emery paper to expose the pattern.

I then used tube rivets with spacers to rivet on a reticulated piece of silver to add depth and interest.

I really love this piece! :)

Re-polishing and re-oxidising yesterday before the deadline. Shiny! #jewellery #jeweller #design #polishing #oxidising #contrast #silver #handmade #kineticjewellery #kineticart #bangle #bracelet #pendant #brooch #wearme #scrolls #structure #spheres #circles #astronomy (at Hereford College of Arts)

Stunning cuprite

While we have shared a micromount sample of the bright red copper oxide also known as ruby copper before (see http://tinyurl.com/kzlp9ky), this 2cm macro crystal is the finest quality there is. Since it crystallises in the cubic system, it tends to form similar shapes to diamonds, in this case a complex series of octahedral twins. It is a spectacular secondary mineral, with bright lustre, that originates in the oxidised zone of copper sulphide deposits, where groundwater and hydrothermal fluids have enriched the deposit by removing elements such as silica, a process known in the minig biz as supergene enrichment (which front loads cashflow in order to repay the debt used to finance the capital costs of the operation). Localities include Chile, the Democratic Republic of Congo, the Russian Urals and Namibia (Tsumeb mine). Larger crystals have been faceted for collectors.

Our past posts on twinned crystals:http://tinyurl.com/me9rpxh
http://tinyurl.com/mvbojuj http://tinyurl.com/l8yba54,http://tinyurl.com/ntdtdb6http://tinyurl.com/nr7cq6n,http://tinyurl.com/kp6nlufhttp://tinyurl.com/nr7cq6n and
http://tinyurl.com/lr9rvgf

Loz

Image credit: Wolfgang Hartmann

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A dear friend of mine just celebrated her 21st birthday and I wanted to give her something very personal and unique to mark the occasion. This set of three rings has one textured band, one initial ring and one birthstone ring, featuring a 4mm gemstone. All the rings are sterling silver and have been oxidised and polished to show the detail of the textured ring and the letter ring.

This is set is now available in all birthstones and letters, here

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Oxidising ethanol to ethanal (mild oxidation)

1- Equipment set up - Pear shaped flask, stillhead, dropping funnel, Leibig condenser, delivery tube, boiling tube, beaker of crushed ice

2-  Beginning the procedure- The pear shaped flask contains sulphuric acid, deionised water and anti bumping granules. The dropping funnel contains sodium dichromate(VI) in a mixture of deionised water and ethanol. The reaction when these mix is exothermic, so the contents of the dropping funnel are emptied very slowly to the pear shaped flask.As you can see in the difference in colour of the contents of the pear shaped flask between image 1 and 2, the oxidation reaction will also cause a colour change (to green). 

3- Collecting the product- As previously stated, the reaction is exothermic, meaning the contents of the pear shaped flask will begin to boil. The product of the oxidation reaction, ethanal, is highly volatile and will evaporate. This vapour will travel down the Leibig condenser, where it will condense before being collected in the boiling tube. This boiling tube is kept in a beaker of ice to ensure that the ethanal remains a liquid and does not evaporate.

4- The pear shaped flask- The contents of the pear shaped flask are heated with a bunsen burner to ensure all of the ethanol has been oxidised to ethanal, has evaporated, condensed and then collected.

The equation of this reaction is-

CH3CH2OH + [O] —> CH3CHO + H2O

(in this example [O] is Na2Cr2O7 /Sodium dichromate(IV))

ethanol + oxidising agent —> ethanal + water

genderthinks said: we built this city / we built this city on moss and mold

"I make no apologies for putting micro-organisms on a pedestal above all other living things, for if the last blue whale choked to death on the last panda, it would be disastrous but not the end of the world. But if we accidentally poisoned the last two species of ammonia-oxidisers, that would be another matter. It could be happening now and we wouldn’t even know…

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'Darkly Romantic, opulent, everlasting'  Brighton based jewellery designer Cara Tonkin grew up visiting antique markets and treasure trove boutiques. Her love for historical objects and design is a strong influence within the three collections that we exhibit at Nude. 'I design for women who love fashion and appreciate craftsmanship, but don't need to follow trends'

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