Sanromanite Mineral Data

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General Sanromanite Information

Chemical Formula:

Na2CaPb3(CO3)5

Composition:

Molecular Weight = 1,007.70 gm

Sodium 4.56 % Na 6.15 % Na₂O

Calcium 3.98 % Ca 5.56 % CaO

Lead 61.68 % Pb 64.07 % Pb₂O

Carbon 5.96 % C 21.84 % CO₂

Oxygen 23.82 % O

______ ______

100.00 % 97.62 % = TOTAL OXIDE

Empirical Formula:

Na₂CaPb₃(CO₃)₅

Environment:

Burbankite group

IMA Status:

Proposed IMA 2006 (Dana # Added)

Locality:

Mina Santa Rosa, Iquique, Northern Chile Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals, Nomenclature and Classification (CNMNC)

Synonym:

IMA2006-009

Sanromanite Image

Images:

Sanromanite Juangodoyite Chalconatronite

Comments: Yellowish, long balded sanromanite crystals in vug with platy, blue juangodoyite replacing green chalconatronite.
Location: Santa Rosa mine, Iquique Province, Tarapaca, Chile. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Sanromanite Crystallography

Axial Ratios:

a:c = 1:0.62943

Cell Dimensions:

a = 10.5564, c = 6.6446, V = 641.26

Crystal System:

Hexagonal - Dihexagonal PyramidalH-M Symbol (6mm) Space Group: P 6₃mc

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.769(1), 2.64(0.65), 3.066(0.51),2.161(0.5), 2.688(0.5), 1.993(0.44), 3.323(0.43), 2.066(0.34),

Optical Properties of Sanromanite

Optical Data:

Calculated Properties of Sanromanite

Fermion Index:

Fermion Index = 0.13
Boson Index = 0.87

Photoelectric:

PE_Sanromanite=1,090.01 barns/electron
U=PE_Sanromanite x rElectron Density= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sanromanite is Not Radioactive

Sanromanite Classification

Dana Class:

14.04.04.04 (14)Anhydrous Carbonates

(14.04)with Compound Formula A+2 B++2 (CO3)4

(14.04.04)Burbankite Group (Hexagonal)

14.04.04.01 Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 P 6₃/mmc 6/m 2/m 2/m

14.04.04.02 Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 P 6₃mc 6mm

14.04.04.03 Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 P 6₃mc 6mm

14.04.04.04 Sanromanite! Na2CaPb3(CO3)5 P 6₃mc 6mm

Strunz Class:

05.AC.30 05 - CARBONATES (NITRATES)

05.A - Carbonates without additional anions, without H2O

05.AC -Alkali and alkali-earth carbonates

05.AC.30 Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 P 6₃/mmc 6/m 2/m 2/m

05.AC.30 Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 P 6₃mc 6mm

05.AC.30 Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 P 6₃mc 6mm

05.AC.30 Sanromanite! Na2CaPb3(CO3)5 P 6₃mc 6mm

Other Sanromanite Information

See Also:

Links to other databases for Sanromanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Sanromanite using:

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Ask about Sanromanite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Sanromanite Specimen Label here :

Sanromanite

Na2CaPb3(CO3)5
Dana No: 14.04.04.04 Strunz No: 05.AC.30
Locality:

Notes: