Kieserite - Encyclopedia

    Class : Sulfates, chromates, molybdates
    Subclass : Hydrated sulfates
    Crystal system : Monoclinic
    Chemistry : MgSO4 H2O
    Rarity : Common


Kieserite is a sulfate of marine evaporites. It was named in honor of Dietrich Georg Kieser, President of the Academy of Jena (Germany). Kieserite occurs in grainy masses, intimately mixed with other salts (halite, sylvite, polyhalite), sometimes in pyramidal crystals, colorless or grayish or yellowish in color. It is used as a source of potassium in the manufacture of potassium salts.

Main photo : Kieserite from Kladno District, Czech Republic © Harold Moritz

Kieserite in the World

Kieserite is common in the Permian potash deposits of Central Europe : the German deposits of Hildesheim, Wathlingen and Westergeln, and the Austrian deposits of Hallstatt have thus provided beautiful crystals. Kieserite is also known from the Permian salt deposits of New Mexico and Utah, particularly around Carlsbad. It is the almost exclusive mineral of the salt layers discovered in Saratov (Russia).

Kieserite in France

Kieserite is not present in the French underground.

Twinning

Contact twins are known on {001} and polysynthetics according to [110].

Fakes and treatments

No fakes recorded for this mineral species.



Hardness : 3.5
Density : 2.57
Fracture : Undetermined
Streak : White


TP : Translucent
RI : 1.520 to 1.584
Birefringence : 0.064
Optical character : Biaxial +
Pleochroism : None
Fluorescence : None


Solubility : Water

Magnetism : NoneRadioactivity : 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/