Chernovite - Encyclopedia

    Class : Phosphates, arsenates, vanadates
    Subclass : Anhydrous arsenates
    Crystal system : Tetragonal
    Chemistry : YAsO4
    Rarity : Very rare


Chernovite is an extremely rare yttrium arsenate which forms a series with xenotime, its phosphate equivalent. It may contain notable quantities of other rare earth elements, in particular lanthanides (lanthanum, erbium, gadolinium, etc.). Its name was given to it in honor of the Russian geologist Alexander Aleksandrovich Chernov. It is a very rare mineral whose deposit type is not well understood. It is in fact present in alpine clefts (Pizzo Cervandone, Italy), veinlets of piemontite with molybdenite and scheelite cutting liparites (Polar Urals), pegmatites (Jaguaraçu, Minas Gerais, Brazil), or magnesite deposits (Brumado , Brazil). It appears to be commonly a primary arsenate formed at high temperatures. It forms prismatic to acicular crystals of 6 mm maximum, pale yellow to greenish, sometimes orange.

Main photo : Chernovite from Monte Cervandone, Piedmont, Italy © Enrico Bonacina

Chernovite from Monte Cervandone, Piedmont, Italy © Enrico Bonacina
Chernovite from Monte Cervandone, Piedmont, Italy © Enrico Bonacina
Chernovite from Wanni Glacier, Valais, Switzerland © Enrico Bonacina
Chernovite from Monte Cervandone, Piedmont, Italy © Angelo Brambilla

Chernovite in the World

The best specimens come from Brumado (Brazil), beautiful millimeter crystals are known at Monte Cervandone in the Italian Piedmont as well as in the Swiss Alps at the Wanni Glacier.

Chernovite in France

This mineral is not present in the French underground.

Twinning

No twins known for this mineral species.

Fakes and treatments

No fake identified for this mineral species.



Hardness : 4 to 5
Density : 4.86
Fracture : Conchoidal
Streak : White



TP : Transparent
RI : 1.783 to 1.879
Birefringence : 0.096
Optical character : Uniaxial +
Pleochroism : Low
Fluorescence : None


Solubility : -


Magnetism : None
Radioactivity : None

ReCaptcha

This service is used to secure web forms of our website and required if you want to contact us. By accepting it you agree to Google's privacy policy: https://policies.google.com/privacy

Facebook

Our website allows you to like or share its content on Facebook social network. By activating and using it you agree to Facebook's privacy policy: https://www.facebook.com/policy/cookies/

YouTube

Integrated videos provided by YouTube are used on our website. By accepting to watch them you agree to Google's privacy policy: https://policies.google.com/privacy

Twitter

Integrated tweets and share services of Twitter are used on our website. By accepting and using these you agree to Twitter's privacy policy: https://help.twitter.com/en/rules-and-policies/twitter-cookies

PInterest

Our website allows you to share its content on PInterest social network. By activating and using it you agree to PInterest's privacy policy: https://policy.pinterest.com/en/privacy-policy/