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UM1995-36-SOSiO:AlHPb

A material that is NOT an approved mineral species

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Formula:

Pb₂₇(Al_1.6Mn_0.4)(Si₆O₁₅)₂(SO₄)₂O₁₀(OH)₂₄

Colour:

white

Specific Gravity:

6.37 (Calculated)

Crystal System:

Hexagonal

Round masses (100 microns in diameter), consisting of white, platy crystals.

Occurs within cavities in weathered rock fragments that are debris from a sphalerite-chalcopyrite-galena skarn deposit.

Electron microprobe data (mean & range, wt.%): MnO 0.40 (0.34–0.46), PbO 83.75 (83.16–84.33), Al₂O₃ 1.04 (0.95–1.11), SiO₂ 9.35 (8.65–9.86), SO₃ 1.83 (1.67–1.93), H₂O (by difference) 3.63, total 100.

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Unique IdentifiersHide

Mindat ID:

42947

Long-form identifier:

mindat:1:1:42947:8

GUID
(UUID V4):

82c77b26-f5bc-440d-9d13-79fd3f84f0f5

Physical Properties of UM1995-36-SOSiO:AlHPbHide

Transparency:

Translucent

Colour:

white

Comment:

not determinable

Tenacity:

Brittle

Cleavage:

Perfect

Density:

6.37 g/cm³ (Calculated)

Chemical Properties of UM1995-36-SOSiO:AlHPbHide

Formula:

Pb₂₇(Al_1.6Mn_0.4)(Si₆O₁₅)₂(SO₄)₂O₁₀(OH)₂₄

Elements listed:

Al, H, Mn, O, Pb, S, Si - search for minerals with similar chemistry

Crystallography of UM1995-36-SOSiO:AlHPbHide

Crystal System:

Hexagonal

Cell Parameters:

a = 9.203(4) Å, c = 25.72(2) Å

Ratio:

a:c = 1 : 2.795

Unit Cell V:

1,886.52 Å³ (Calculated from Unit Cell)

Comment:

Class or space group unknown.

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
25.7 Å	(70)
3.20 Å	(80)
2.86 Å	(100)
1.95 Å	(40)
1.92 Å	(35)
1.87 Å	(80)

Other InformationHide

IR Spectrum:

bands [cm^-1]: t 3350 ("retained after heating to
104 ^oC", possibly from structural water"), 1551,
1347, 1142, 976

Health Risks:

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

References for UM1995-36-SOSiO:AlHPbHide

Reference List:

Cipriani, C., Corazza, M., Pratesi, G. (1995) A new lead silicate sulfate hydroxide from Val Fucinaia, Tuscany, Italy. Periodico di Mineralogia, Roma, 64, 309-313. in: Jambor, J.L., Grew, E.S., Roberts, A.C. (1996): New mineral names. American Mineralogist: 82: 821 [http://www.minsocam.org/msa/ammin/toc/abstracts/1997_abstracts/ja97_abstracts/Jambor_p820_97.pdf].

Smith, D.G.W., Nickel, E.H. (2007) A System of Codification for Unnamed Minerals: Report of the SubCommittee for Unnamed Minerals of the IMA Commission on New Minerals, Nomenclature and Classification. Canadian Mineralogist: 45: 983-1055.

http://nrmima.nrm.se (2016)

Localities for UM1995-36-SOSiO:AlHPbHide

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

- 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.


France
Occitanie Aveyron Villefranche-de-Rouergue Asprières ⓘ Bréziès	Lesénéchal, T. & Desor, J. (06/21) SEM-EDS, Raman & SC-XRD confirmed

Italy
Tuscany Livorno Province Campiglia Marittima ⓘ Madonna di Fucinaia (Madonna della Fucinaia) slag heaps	Cipriani, C., Corazza, M., Pratesi, G. (1995) A new lead silicate sulfate hydroxide from Val Fucinaia, Tuscany, Italy. Periodico di Mineralogia, Roma, 64, 309-313.
ⓘ Campigliese (Campiglia Mountains; Campiglia Ridge)	Cipriani, C., Corazza, M., Pratesi, G. (1995) A new lead silicate sulfate hydroxide from Val Fucinaia, Tuscany, Italy. Periodico di Mineralogia, Roma, 64, 309-313.

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