Important Update News

The RRUFF Project (rruff.info) is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional.

We are grateful to NASA for the funding of this effort.

Hellandite-(Ce) R061013

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 2378 of 4216  


Name: Hellandite-(Ce)
RRUFF ID: R061013
Ideal Chemistry: (Ca,REE)4Ce2Alâ—»2(B4Si4O22)(OH)2
Locality: Campo Pefella, near Capranica, Viterbo, Latium, Italy
Source: Michael Scott S102789 [view label]
Owner: RRUFF
Description: Pale yellow platy crystals
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ Hellandite (2) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
DOWNLOADS:

  To download sample data,
  please select a specific
  orientation angle.

Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R061013
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
REFERENCES for Hellandite-(Ce)

American Mineralogist Crystal Structure Database Record: [view record]

Hogarth D D, Chao G Y, Harris D C (1972) New data on hellandite, The Canadian Mineralogist, 11, 760-776   [view file]

Oberti R, Ottolini L, Camara F, Della Ventura G (1999) Crystal structure of non-metamict Th-rich hellandite-(Ce) from Latium (Italy) and crystal chemistry of the hellandite-group minerals, American Mineralogist, 84, 913-921   [view file]

Oberti R, Ventura G D, Ottolini L, Hawthorne F C, Bonazzi P (2002) Re-definition, nomenclature, and crystal-chemistry of the hellandite group, American Mineralogist, 87, 745-752   [view file]