PYROXFERROITE

    Class : Silicates
    Subclass : Inosilicates
    Crystal system : Triclinic
    Chemistry : (Fe,Mn,Ca)SiO3
    Rarity : Very rare

Pyroxferroite is a pyroxenoid which forms a series with pyroxmangite. It has an unusual characteristic : it is one of the extremely rare minerals to have been discovered in microgabbros samples brought back from the Moon by the Apollo XI mission. Its name is formed by the contraction of pyroxmangite and the English word ferrous, meaning that it is a ferrous equivalent of pyroxmangite. Pyroxferroite is colorless to yellow and forms small grains.

Main photo : Pyroxferroïte from Caspar quarry, Ettringen, Germany © Christof Schäfer

Pyroxferroite in the World

Pyroxferroite is extremely rare, in addition to its two locations on the Moon, it is only known from around ten locations in the world including the United States, Japan, Sweden, India, Germany and Finland...

Pyroxferroite in France

Pyroxferroite is not present in the French underground.

Twinning

No twins known for this mineral species.

Fakes and treatments

No fakes listed for this mineral species.


Hardness : 4.5 to 5.5
Density : 3.68 to 3.76
Fracture : Undetermined
Streak : Undetermined

TP : Translucent
RI : 1.748 to 1.768
Birefringence : 0.019
Optical character : Biaxial +
Pleochroism : None
Fluorescence : None

Solubility : Insoluble

Magnetism : NoneRadioactivity : None

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