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Sanrománite

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Santa Rosa Mine, Santa Rosa-Huantajaya District, Iquique Province, Tarapacá Region, Chile
© Leon Hupperichs

Show Sanrománite Photos (14)
Formula:
Na
 
2
CaPb
 
3
[CO
 
3
]
 
5
System:HexagonalColour:colourless, green-yellow
Name:Named for the Chilean naturalist (mineralogy and geology) Francisco J. San Román (1834-1902)


Burbankite Group

Pb analogue of burbankite, calcioburbankite, and khanneshite

Classification of Sanrománite

IMA status:Approved 2006
Strunz 8th edition ID:5/B.05-115
Strunz 9th edition ID:5.AD.10
Nickel-Strunz 10th (pending) edition ID:5.AC.30

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates
Dana 8th edition ID:14.4.4.4

14 : ANHYDROUS NORMAL CARBONATES
4 : Miscellaneous
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Type Occurrence of Sanrománite

Type Locality:Santa Rosa Mine, Santa Rosa-Huantajaya District, Iquique Province, Tarapacá Region, Chile
General Appearance of Type Material:radiating acicular or artichoke-like aggregates, and as isolated needles

Physical Properties of Sanrománite

Colour:colourless, green-yellow
Density (calculated):5.2 g/cm3

Crystallography of Sanrománite

Crystal System:Hexagonal
Class (H-M):6mm - Dihexagonal Pyramidal
Space Group:P63mc
Cell Parameters:a = 10.553Å, c = 6.6441Å
Ratio:a:c = 1 : 0.63
Unit Cell Volume:V 640.5 ų
Z:2
X-Ray Powder Diffraction:
d-spacingIntensity
3.769 (100)
3.323 (43)
3.066 (51)
2.688 (50)
2.640 (65)
2.161 (50)
2.066 (34)

Chemical Properties of Sanrománite

Formula:
Na
 
2
CaPb
 
3
[CO
 
3
]
 
5
All elements listed in formula:C, Ca, Na, O, Pb
Analytical Data:
Na2O (6.04)
CaO (5.64)
PbO (65.86)
CO2 (21.84)
total (99.38)

Relationship of Sanrománite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.AC.05Eitelite
Na
 
2
Mg(CO
 
3
)
 
2
5.AC.10Nyerereite
Na
 
2
Ca(CO
 
3
)
 
2
5.AC.10Zemkorite
Na
 
2
Ca(CO
 
3
)
 
2
5.AC.15Bütschliite
K
 
2
Ca(CO
 
3
)
 
2
5.AC.20Fairchildite
K
 
2
Ca(CO
 
3
)
 
2
5.AC.25Shortite
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
5.AC.30Burbankite
(Na,Ca)
 
3
(Sr,Ba,Ce)
 
3
(CO
 
3
)
 
5
5.AC.30Calcioburbankite
Na
 
3
(Ca,REE,Sr)
 
3
(CO
 
3
)
 
5
5.AC.30Khanneshite
(Na,Ca)
 
3
(Ba,Sr,Ce,Ca)
 
3
(CO
 
3
)
 
5

Other Names for Sanrománite

Synonyms:
IMA2006-009Sanromanite
Other Languages:
German:Sanromanit

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Sanrománite

Reference List:Schlüter, J., T. Malcherek & D. Pohl (2007): "Sanrománite, from the Santa Rosa mine, Atacama desert, Chile, a new mineral of the burbankite group": Neues Jahrbuch fur Mineralogie, Abhandlungen, 183, 117-121.

Internet Links for Sanrománite

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    Localities for Sanrománite

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    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Chile
     
    • Tarapacá Region
      • Iquique Province
        • Santa Rosa-Huantajaya District
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 9th Nov 2009 20:16:23