Named in honor of Andrea Dini (b. 1966), geologist with the Italian National Research Council, Institute of Geosciences and Earth Resources, for "his contributions to the knowledge of ore deposits from Tuscany and, in particular, the ore geology and mineralogy of Hg ores from Apuan Alps."

Type Locality:

ⓘ Sant'Olga tunnel, Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy

This page provides mineralogical data about Andreadiniite.

Classification of AndreadiniiteHide

IMA status:

Approved

Approval Year:

2014

First Published:

2018

Physical Properties of AndreadiniiteHide

Lustre:

Metallic

Optical Data of AndreadiniiteHide

Type:

Anisotropic

Anisotropism:

weak, gray to bluish-gray

Reflectivity:

470nm	R₁=34.8%	R₂= 36.4%
546nm	R₁=33.5%	R₂= 35.1%
589nm	R₁=32.9%	R₂= 35.0%
650nm	R₁=31.8%	R₂= 32.4%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 36.4%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

white, with a slightly yellow-bronze tint

Pleochroism:

Not Visible

Chemical Properties of AndreadiniiteHide

Formula:

CuHgAg₇Pb₇Sb₂₄S₄₈

Elements listed:

Ag, Cu, Hg, Pb, S, Sb - search for minerals with similar chemistry

Crystallography of AndreadiniiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

P2₁/b

Setting:

P2₁/c

Cell Parameters:

a = 19.0982(12) Å, b = 17.0093(11) Å, c = 13.0008(10) Å
β = 90.083(4)°

Ratio:

a:b:c = 1.123 : 1 : 0.764

Unit Cell V:

4223.3 Å³

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.719	(ms)
3.406	(s)
3.277	(s)
2.885	(s)
2.740	(ms)
2.263	(ms)
2.055	(s)
1.788	(s)

Comments:

From Type Description.

Type Occurrence of AndreadiniiteHide

Type Locality:

ⓘ Sant'Olga tunnel, Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy

General Appearance of Type Material:

black anhedral grains, up to some mm in size

Place of Conservation of Type Material:

Type material is deposited in the collections of the Museo di Storia Naturale, Universita` di Pisa, Via Roma 79, Calci (Pisa), Italy, catalogue number 19688

Reference:

Biagioni, C., Moëlo, Y., Orlandi, P., Paar, W.H. (2018) Lead-antimony sulfosalts from Tuscany (Italy). XXIII. Andreadiniite, CuAg7HgPb7Sb24S48, a new oversubstituted (Cu,Hg)-rich member of the andorite homeotypic series from the Monte Arsiccio mine, Apuan Alps. European Journal of Mineralogy: 30: 1021-1035.

Synonyms of AndreadiniiteHide

IMA2014-049

Relationship of Andreadiniite to other SpeciesHide

Member of:

Lillianite Homologous Series Group

Other Members of this group:

Andorite IV	Pb₁₈Ag₁₅Sb₄₇S₉₆	Mon. 2 : P2
Andorite VI	AgPbSb₃S₆	Orth. mm2 : Pmn2₁
Arsenquatrandorite	Ag_17.6Pb_12.8Sb_38.1As_11.5S₉₆	Mon. 2/m : P2₁/b
Aschamalmite	Pb₆Bi₂S₉	Mon. 2/m
Clino-oscarkempffite	Ag₁₅Pb₆Sb₂₁Bi₁₈S₇₂	Mon. 2/m : P2₁/b
Erzwiesite	Ag₈Pb₁₂Bi₁₆S₄₀	Orth. mmm (2/m 2/m 2/m) : Pbcn
Eskimoite	Ag₇Pb₁₀Bi₁₅S₃₆	Mon.
Fizélyite	Ag₅Pb₁₄Sb₂₁S₄₈	Mon. 2/m
Gustavite	AgPbBi₃S₆	Orth. mmm (2/m 2/m 2/m)
Heyrovskýite	Pb₆Bi₂S₉	Orth. mmm (2/m 2/m 2/m) : Cccm
Jasrouxite	Ag₁₆Pb₄(Sb₂₄As₁₆)S₇₂	Tric. 1 : P1
Lillianite	Pb_3-2xAg_xBi_2+xS₆	Orth. mmm (2/m 2/m 2/m)
Oscarkempffite	Ag₁₀Pb₄(Sb₁₇Bi₉)S₄₈	Orth. mm2
Ourayite	Ag₃Pb₄Bi₅S₁₃	Orth.
Oyonite	Ag₃Mn₂Pb₄Sb₇As₄S₂₄	Mon. 2/m
Ramdohrite	Pb_5.9Fe_0.1Mn_0.1In_0.1Cd_0.2Ag_2.8Sb_10.8S₂₄	Mon. 2/m
Roshchinite	Ag₁₉Pb₁₀Sb₅₁S₉₆	Orth.
Schirmerite	PbAgBi₃S₆ - Pb₃Ag_1.5Bi_3.5S₉	Orth.
Staročeskéite	Ag_0.70Pb_1.60(Bi_1.35Sb_1.35)_Σ2.70S₆	Orth. mmm (2/m 2/m 2/m) : Cmcm
Terrywallaceite	AgPb(Sb,Bi)₃S₆	Mon. 2/m : P2₁/b
Treasurite	Ag₇Pb₆Bi₁₅S₃₂	Mon.
Uchucchacuaite	AgMnPb₃Sb₅S₁₂	Orth. mmm (2/m 2/m 2/m) : Pmmm
Ustarasite	Pb(Bi,Sb)₆S₁₀ (?)
Vikingite	Ag₅Pb₈Bi₁₃S₃₀	Mon. 2/m : B2/m
Xilingolite	Pb₃Bi₂S₆	Mon.

Other InformationHide

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 AndreadiniiteHide

Reference List:

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)

Biagioni, C., Moëlo, Y., Orlandi, P. and Paar, W.H. (2014) Andreadiniite, IMA 2014-049. CNMNC Newsletter No. 22, October 2014, page 1244. Mineralogical Magazine: 78: 1241-1248.

Internet Links for AndreadiniiteHide

mindat.org URL:

https://www.mindat.org/min-46429.html
Please feel free to link to this page.

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External Links:

Look for Andreadiniite on Webmineral

Look for Andreadiniite on Wikipedia

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

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Localities for AndreadiniiteHide

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 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 (eg from pseudomorphs.)

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

Italy (TL)

Tuscany

Lucca Province

Apuan Alps

Stazzema

Sant'Anna di Stazzema

Monte Arsiccio Mine

ⓘ Sant'Olga tunnel (TL)

Biagioni, C., Moëlo, Y., Orlandi, P. and Paar, W.H. (2014) Andreadiniite, IMA 2014-049. CNMNC Newsletter No. 22, October 2014, page 1244; Mineralogical Magazine, 78, 1241-1248.

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