Sanrománite (original) (raw)

A valid IMA mineral species

About SanromániteHide

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Colour:

Colourless, green-yellow

Specific Gravity:

5.20 (Calculated)

Name:

Named for the Chilean naturalist (mineralogy and geology) Francisco J. San Román (ca. 1838, Copiapó, Chile - 1902, Santiago de Chile, Chile). He explored and surveyed the Atacama Desert, participating in eight campaigns financed by the Chilean state from 1883 to 1887 and then continued on his own to explore and search for mining veins. In 1890, he drew up and published the first topographic map of the Atacama Desert and mountain ranges. Delegate of Chile to the 5th International Congress of Geology that was held in Washington in 1890.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:29029:2

5680e51d-8e79-4ef8-aa5e-ef1b3f165ba7

IMA Classification of SanromániteHide

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IMA Formula:

Na2CaPb3(CO3)5

Classification of SanromániteHide

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5.AC.30

5 : CARBONATES (NITRATES)
A : Carbonates without additional anions, without H2O
C : Alkali and alkali-earth carbonates

14.4.4.4

14 : ANHYDROUS NORMAL CARBONATES
4 : Miscellaneous

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of SanromániteHide

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Colour:

Colourless, green-yellow

Density:

5.20 g/cm3 (Calculated)

Chemistry of SanromániteHide

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Mindat Formula:

Na2CaPb3[CO3]5

Crystallography of SanromániteHide

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Class (H-M):

6_m_ m - Dihexagonal Pyramidal

Cell Parameters:

a = 10.553(1) Å, c = 6.641(1) Å

Morphology:

Crystals are elongated along [0001] and show the forms {1010} and {1121}.

Twinning:

Occurs on (1120).

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of SanromániteHide

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General Appearance of Type Material:

Radiating acicular or artichoke-like aggregates, and as isolated needles.

Place of Conservation of Type Material:

Mineralogisches Museum, Universität Hamburg, Hamburg, Germany, numbers MD 211, MD 209, C 904.

Geological Setting of Type Material:

Oxidation zone of a polymetallic vein deposit.

Associated Minerals at Type Locality:

Synonyms of SanromániteHide

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Other Language Names for SanromániteHide

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Relationship of Sanrománite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of SanromániteHide

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Other InformationHide

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Notes:

Easily soluble in concentrated HCl with strong effervescence. It decomposes slowly in concentrated nitric and sulphuric acids leading to respectively a white and a bluish-white residue.

Health Risks:

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

Internet Links for SanromániteHide

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References for SanromániteHide

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Reference List:

Schlüter, J., Malcherek, T., Pohl, D. (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.

Localities for SanromániteHide

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This 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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.