Calcio-ancylite

Formula:  (Ca,Sr)(Nd,Ce)3(CO3)4(OH)3 . H2O

Origin of name:  From calcium and ancylite

 

Crystal system:  Orthorhombic

Crystal class:  m

Twinning:

Unit cell:

 

Colour:  Pale pink

Diaphaneity:

Luster:  Vitreous

Habit:  Dipyramidal pseudo-orthorhombic grains in pine cone-like aggregates to 1 mm

Hardness:  4 to 4.5

Specific gravity:  4.02

Cleavage:  None

Tenacity:

Streak:  White

 

Synonyms/varieties:

 

Comments:  Two distinct species with the extensions -(Ce) and -(Nd) indicating the predominant rare earth cation in the formula

 

Back to Alphabetical list Colour photos: calcio-ancylite-(Nd), calcio-ancylit-(Ce) Optical properties/Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra