#chromite

[a-reb]

a little chromite doodle since hnk ended,,,,

[melusina]

Raise your hand if you love spinel group oxides <3

[earthstory]

Crikey, it's crocoite!

This striking red-orange mineral is known as crocoite. It is a lead chromite with the formula PbCrO4. The name "crocoite" is derived from the Greek word "krokos", meaning crocus (the flower from which saffron is harvested).

In the late 18th century, this mineral had a brief stint as the chief source of the element chromium (until chromite was discovered in 1799) and was also a source of the pigment, chrome yellow. Nowadays crocoite is mined primarily for the mineral specimen collection market due to its relative rarity. This is because of the specialised conditions required for its formation: the presence of ultramafic rock (the source of chromium, found in chromite) near a zone of oxidised lead ore. It occurs here as a secondary mineral, which means that it forms due to the alteration of primary material. Ultramafic rocks are igneous in origin and derived from the Earth's mantle. They are typically very low in light, silica- and potassium-rich minerals (e.g. quartz and feldspars) and high in and dark, heavy magnesium- and iron-rich minerals (e.g. peridotites and pyroxenes).

Crocoite is a relatively soft, brittle mineral with a hardness rating of 2.5-3. It is prized by collectors for it’s acicular (needle-like) aggregates of prismatic, translucent crystals. It also occurs as reticulated (criss-crossing) clumps, singular elongated needles, and as a grainy, encrusting mass.

Crocoite is only found at a handful of locations worldwide, including Brazil, Germany, the Philippines, Romania, and South Africa, but the best specimens are reputed to have come from the Australian state of Tasmania. As the photograph testifies, the specimens found there are stunning.

YK

Image credit: Australian Museum (http://australianmuseum.net.au/image/Crocoite-specimen/)

Further reading: Mindat entry for crocoite: http://www.mindat.org/min-1157.html Mining crocoite in Tasmania:http://www.mineral.org.au/news/crocoitemine.html Uses of chromium: http://www.dartmouth.edu/~toxmetal/toxic-metals/more-metals/chromium-history.html

[penebui]

i am content w these, and shout out to @rutipads for giving me the suggestion that a Uvarovite gem should be Pyrope’s partner!! This also helped me w Chromite and Vesuvianite ;; 

info below !! 

[Chromite]

Chromite was born with Chromium infused with their body, and they use the chromium as phos would with their gold. Former partner is Chrome Vesuvianite, they resigned as their partner after Pyrope lost their partner and lost their memories of their abduction. Their first interaction with Pyrope after their abduction wasn’t a kind one, saying that they should’ve been the one taken instead of Uvarovite. They reluctantly partnered up with Pyrope and apologized for this. Their hardness is 5.5, and their incredibly insecure about their hardness because of their metal’s hardness (10). Although Pyrope’s hardness is much stronger than Chromite, they sacrifice themselves to protect them, probably as an apology. They’re concerned about Pyrope, simply because they aren’t acting like their usual self.

[Chrome Vesuvianite]

Seeing how much Uvarovite’s kidnapping affected Pyrope, they stepped down as Chromite’s partner. Although they wanted to help Pyrope and their mental health, they haven’t interacted with Uvarovite despite the similar make up. They instead made Chromite as Pyrope’s partner. They were also the one who suggest that Chromite should apologize to Pyrope. They patrol by themselves and look after them both in secret. 

[Pyrope]

After loosing their partner Uvarovite, they forgot everything. They don’t reply when someone calls their name, nor do they remember anything about Uvarovite. Their response to Chromite’s insult was, “I know. I’ll try harder next time.” but other than that they have no hard feelings towards them. This might be because they don’t remember the day they were taken to the moon. They also forget that their hardness is 7.5. They often take trips to the sea and seem to disappear three times a day. No one knows where they go or what they do in those times. 

[Uvarovite]

They were energetic and snarky, as well as being irresponsible. Pyrope had to look after them most of the time. They would hang out with Chromite while their partner was off talking to their friend from the sea. They only saw the ‘friend’ once before their abduction and reached out to them. 

[homemade-cage]

olivine swirl

Nikon D3200, click for better quality

[bijoux-et-mineraux]

Unusual Seymchan Meteorite Slice with Chromite

This slice weighs 565.6 grams and contains multiple inclusions of Chromite, a mineral that is common to find in meteorites but not common to find like this. Normally it will display as a small dark blob, but this slice has stunning Chromite inclusions coursing all through it. The Seymchan Pallasite Meteorite was discovered in 1967 and comes from Russia.

[keepingitneutral]

Untitled (Iphone Mine), 2014, Halite, chalcopyrite, bauxite, colemanite, chromite, peridotite, quartz, sphalerite, crude oil, dolomite, graphite ore, limestone, magnesite, gold ore, silver ore, pyrolusite, celestite, hematite...

[a-reb]

i recently finished houseki no kuni within like,,,3 days of finding out about it from friends and im just OWUGHHHHH so i made an oc!!!

his name is chromite and i like him a lot