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Mapiquiroite

A valid IMA mineral species

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Photos of Mapiquiroite (2)

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Mapiquiroite

Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

Mapiquiroite

Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

Mapiquiroite

Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

Mapiquiroite

Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

Mapiquiroite

Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

Mapiquiroite

Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

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About MapiquiroiteHide

Formula:

(Sr,Pb)(U,Y)Fe₂(Ti,Fe³⁺,Cr³⁺)₁₈O₃₈

Colour:

Black

Lustre:

Sub-Metallic

Hardness:

Specific Gravity:

4.670 - 4.843

Crystal System:

Trigonal

Member of:

Crichtonite Group

Name:

Named in honour of four Italian mineral collectors, Riccardo Mazzanti (b. 1953), Luigi Pierotti (b. 1953), Ugo Quilici (b. 1946), and Moreno Romani (b. 1949) for their contribution to the study of the mineralogy of baryte + pyrite + iron oxide deposits from the Apuan Alps.

Co-Type Localities:

ⓘ Buca della Vena Mine, Pontestazzemese, Stazzema, Lucca Province, Tuscany, Italy
ⓘ Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

Unique combination of elements. The Sr analogue of cleusonite and U analogue of crichtonite.

Unique IdentifiersHide

Mindat ID:

43876

Long-form identifier:

mindat:1:1:43876:8

GUID
(UUID V4):

497cb66b-e912-44a6-aff1-8dc0cde70c38

IMA Classification of MapiquiroiteHide

IMA status:

Approved

IMA Formula:

(Sr,Pb)(U,Y)Fe₂(Ti,Fe³⁺)₁₈O₃₈

Approval year:

2013

First published:

2014

Type description reference:

Biagioni, Cristian, Orlandi, Paolo, Pasero, Marco, Nestola, Fabrizio, Bindi, Luca (2014) Mapiquiroite, (Sr,Pb)(U,Y)Fe₂(Ti,Fe³⁺)₁₈O₃₈, a new member of the crichtonite group from the Apuan Alps, Tuscany, Italy. European Journal of Mineralogy, 26 (3) 427-437 doi:10.1127/0935-1221/2014/0026-2382

Classification of MapiquiroiteHide

Strunz-mindat (2024):

4.00.

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
0 :
0 :

Mineral SymbolsHide

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

Symbol	Source	Reference
Mpq	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MapiquiroiteHide

Lustre:

Sub-Metallic

Colour:

Black

Hardness:

6 on Mohs scale

Hardness:

VHN₁₀₀=750 - 782 - Vickers

Density:

4.670 - 4.843 g/cm³ (Measured)

Optical Data of MapiquiroiteHide

Anisotropism:

Distinct, without characteristic rotation tints.

Bireflectance:

Weakly bireflectant

Reflectivity:

Wavelength	R₁	R₂
471.1nm	17.0%	17.2%
548.3nm	16.7%	17.0%
586.6nm	16.4%	16.7%
652.3nm	16.1%	16.3%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 17.2%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Blackish

Internal Reflections:

Absent

Pleochroism:

Non-pleochroic

Chemistry of MapiquiroiteHide

Mindat Formula:

(Sr,Pb)(U,Y)Fe₂(Ti,Fe³⁺,Cr³⁺)₁₈O₃₈

Elements listed:

Cr, Fe, O, Pb, Sr, Ti, U, Y - search for minerals with similar chemistry

Common Impurities:

Pb,Y,V(V),Cr,Mn,La

Crystallography of MapiquiroiteHide

Crystal System:

Trigonal

Class (H-M):

3 - Rhombohedral

Space Group:

Cell Parameters:

a = 10.3719(7) Å, c = 20.875(1) Å

Ratio:

a:c = 1 : 2.013

Unit Cell V:

1,944.79 Å³ (Calculated from Unit Cell)

Morphology:

Complex rhombohedral or tabular pseudo-hexagonal crystals; tabular pseudo-hexagonal crystals.

Comment:

Buca della Vena

Crystal StructureHide

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0020186	Mapiquiroite	Biagioni C, Orlandi P, Pasero M, Nestola F, Bindi L (2014) Mapiquiroite, (Sr,Pb)(U,Y)Fe2(Ti,Fe3+)18O38, a new member of the crichtonite group from the Apuan Alps, Tuscany, Italy European Journal of Mineralogy 26 427-437		2014	Buca della Vena mine, Apuan Alps, Tuscany, Italy	0	293
0020187	Mapiquiroite	Biagioni C, Orlandi P, Pasero M, Nestola F, Bindi L (2014) Mapiquiroite, (Sr,Pb)(U,Y)Fe2(Ti,Fe3+)18O38, a new member of the crichtonite group from the Apuan Alps, Tuscany, Italy European Journal of Mineralogy 26 427-437		2014	Monte Arsiccio mine, Apuan Alps, Tuscany, Italy	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Mapiquiroite'
loop_
_publ_author_name
'Biagioni C'
'Orlandi P'
'Pasero M'
'Nestola F'
'Bindi L'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 26 
_journal_year 2014
_journal_page_first 427
_journal_page_last 437
_publ_section_title
;
 Mapiquiroite, (Sr,Pb)(U,Y)Fe2(Ti,Fe3+)18O38, a new member
 of the crichtonite group from the Apuan Alps, Tuscany, Italy
;
_database_code_amcsd 0020186
_chemical_compound_source 'Buca della Vena mine, Apuan Alps, Tuscany, Italy'
_chemical_formula_sum 'Sr.533 La.176 Pb.105 Na.03 Ca.026 U.407 Ce.101 Y.205 Mn.072 Fe5.42 Ti12.42 Cr1.62 V.18 Al.036 Sn.018 Nb.018 O38'
_cell_length_a 10.3719
_cell_length_b 10.3719
_cell_length_c 20.8752
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 1944.813
_exptl_crystal_density_diffrn      4.691
_symmetry_space_group_name_H-M 'R -3'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'y,-x+y,-z'
  '2/3+y,1/3-x+y,1/3-z'
  '1/3+y,2/3-x+y,2/3-z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
  '-x,-y,-z'
  '2/3-x,1/3-y,1/3-z'
  '1/3-x,2/3-y,2/3-z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  'x-y,x,-z'
  '2/3+x-y,1/3+x,1/3-z'
  '1/3+x-y,2/3+x,2/3-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
SrM0   0.00000   0.00000   0.00000   0.53300   0.02180
LaM0   0.00000   0.00000   0.00000   0.17600   0.02180
PbM0   0.00000   0.00000   0.00000   0.10500   0.02180
NaM0   0.00000   0.00000   0.00000   0.03000   0.02180
CaM0   0.00000   0.00000   0.00000   0.02600   0.02180
UM1   0.00000   0.00000   0.50000   0.40700   0.00710
CeM1   0.00000   0.00000   0.50000   0.10100   0.00710
YM1   0.00000   0.00000   0.50000   0.20500   0.00710
MnM1   0.00000   0.00000   0.50000   0.07200   0.00710
Fe3+M2   0.00000   0.00000   0.30924   1.00000   0.00700
TiM3   0.18354   0.03965   0.16506   0.69000   0.00750
Fe3+M3   0.18354   0.03965   0.16506   0.19000   0.00750
Cr3+M3   0.18354   0.03965   0.16506   0.09000   0.00750
V5+M3   0.18354   0.03965   0.16506   0.01000   0.00750
AlM3   0.18354   0.03965   0.16506   0.00200   0.00750
SnM3   0.18354   0.03965   0.16506   0.00100   0.00750
NbM3   0.18354   0.03965   0.16506   0.00100   0.00750
TiM4   0.08388   0.33058   0.60827   0.69000   0.01010
Fe3+M4   0.08388   0.33058   0.60827   0.19000   0.01010
Cr3+M4   0.08388   0.33058   0.60827   0.09000   0.01010
V5+M4   0.08388   0.33058   0.60827   0.01000   0.01010
AlM4   0.08388   0.33058   0.60827   0.00200   0.01010
SnM4   0.08388   0.33058   0.60827   0.00100   0.01010
NbM4   0.08388   0.33058   0.60827   0.00100   0.01010
TiM5   0.07587   0.31937   0.39877   0.69000   0.00890
Fe3+M5   0.07587   0.31937   0.39877   0.19000   0.00890
Cr3+M5   0.07587   0.31937   0.39877   0.09000   0.00890
V5+M5   0.07587   0.31937   0.39877   0.01000   0.00890
AlM5   0.07587   0.31937   0.39877   0.00200   0.00890
SnM5   0.07587   0.31937   0.39877   0.00100   0.00890
NbM5   0.07587   0.31937   0.39877   0.00100   0.00890
O1   0.13300   0.19040   0.56244   1.00000   0.01120
O2   0.71060   0.20600   0.44345   1.00000   0.01020
O3   0.35960   0.10130   0.55931   1.00000   0.00890
O4   0.59180   0.03210   0.55013   1.00000   0.00980
O5   0.05190   0.85600   0.33592   1.00000   0.00940
O6   0.36660   0.09900   0.33985   1.00000   0.00940
O7   0.00000   0.00000   0.21550   1.00000   0.00950

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
6.81 Å	(76)
5.18 Å	(100)
4.51 Å	(44)
3.404 Å	(41)
2.994 Å	(35)

Comments:

From Type Description. Buca della Vena

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 4b: Highly evolved igneous rocks	>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of MapiquiroiteHide

Co-Type Localities:

ⓘ Buca della Vena Mine, Pontestazzemese, Stazzema, Lucca Province, Tuscany, Italy
ⓘ Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy

General Appearance of Type Material:

Complex rhombohedral or tabular pseudo-hexagonal crystals, up to 1mm in size ((Buca della Vena). Tabular pseudo-hexagonal crystals, up to 5mm in size (Monte Arsiccio).

Place of Conservation of Type Material:

Type material is deposited in the collections of the collections of the Museo di Storia Naturale, Universita` di Pisa, Via Roma 79, Calci (Pisa), Italy, catalogue numbers 18837 (Buca della Vena) and 19650 (Monte Arsiccio)

Geological Setting of Type Material:

Quartz-adularia-baryte veins embedded in schists (Buca della Vena). Quartz-carbonate veins embedded in magnetite-rich dolostones(Monte Arsiccio).

Associated Minerals at Type Locality:

Tourmaline	Sphalerite	Siderite	Rutile	Pyrite
Monazite-(Ce)	Gypsum	Destinezite	Derbylite	Boulangerite
Baryte	Anatase	Allanite-(Ce)

Reference:

Biagioni, C., Orlandi, P., Pasero, M., Nestola, F., Bindi, L. (2014) Mapiquiroite, (Sr,Pb)(U,Y)Fe₂(Ti,Fe³⁺)₁₈O38, a new member of the crichtonite group from the Apuan Alps, Tuscany, Italy. European Journal of Mineralogy: 26: 427-437.

Synonyms of MapiquiroiteHide

IMA2013-010

Relationship of Mapiquiroite to other SpeciesHide

Member of:

Crichtonite Group

Other Members of this group:

Almeidaite	PbZn₂(Mn,Y)(Ti,Fe³⁺)₁₈O₃₇(OH,O)	Trig. 3 : R3
Botuobinskite	SrFe²⁺Mg₂(Cr³⁺₆Ti⁴⁺₁₂)[O₃₆(OH)₂]	Trig. 3 : R3
Cleusonite	(Pb,Sr)(U⁴⁺,U⁶⁺)(Fe²⁺,Zn)₂(Ti,Fe²⁺,Fe³⁺)₁₈(O,OH)₃₈	Trig. 3 : R3
Crichtonite	Sr(Mn,Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH)₃₈	Trig. 3 : R3
Davidite-(Ce)	Ce(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈	Trig. 3 : R3
Davidite-(La)	La(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈	Trig. 3 : R3
Davidite-(Y)	(La,Ce,Na,Ca,Pb)(Y,Fe²⁺,◻)(Fe²⁺,Mn²⁺)₂(Ti,Fe³⁺,Nb,Zr)₁₈O₃₈ (hypothetical)	Trig.
Dessauite-(Y)	(Sr,Pb)(Y,U)(Ti,Fe³⁺)₂₀O₃₈	Trig. 3 : R3
Gramaccioliite-(Y)	(Pb,Sr)(Y,Mn)Fe³⁺₂(Ti,Fe³⁺)₁₈O₃₈	Trig. 3 : R3
Haitaite-(La)	LaU⁴⁺Fe³⁺₂(Ti₁₃Fe²⁺₄Fe³⁺)O₃₈	Trig. 3 : R3
Landauite	NaMnZn₂(Ti,Fe)₆Ti₁₂O₃₈	Trig. 3 : R3
Lindsleyite	(Ba,Sr)(Zr,Ca)(Fe,Mg)₂(Ti,Cr,Fe)₁₈O₃₈	Trig.
Loveringite	(Ca,Ce,La)(Zr,Fe)(Mg,Fe)₂(Ti,Fe,Cr,Al)₁₈O₃₈	Trig. 3 : R3
Mathiasite	(Mg,Cr,Fe,Ca,K)₂(Ti,Zr,Cr,Fe)₅O₁₂	Trig. 3 : R3
Mianningite	(◻,Pb,Ce,Na)(U⁴⁺,Mn,U⁶⁺)Fe³⁺₂ (Ti,Fe³⁺)₁₈O₃₈	Trig. 3 : R3
Mirnyite	SrZr⁴⁺Mg₂(Cr³⁺₆Ti⁴⁺₁₂)O₃₈	Trig. 3 : R3
Paseroite	PbMn²⁺(Mn²⁺,Fe³⁺)₂(V⁵⁺,Ti,◻)₁₈O₃₈	Trig. 3 : R3
Saranovskite	SrCaFe²⁺₂(Cr₄Ti₂)Ti₁₂O₃₈	Trig. 3 : R3
Senaite	Pb(Mn,Y,U)(Fe,Zn)₂(Ti,Fe,Cr,V)₁₈(O,OH)₃₈	Trig. 3 : R3
UM1987-03-O:FePbTiU	~(U,Pb)(Ti,Fe³⁺,Fe²⁺,Mn)₂₁O₃₈	Trig. 3 : R3
UM2003-08-O:AlCaFeREEScTiV	(Ca,Ce)Sc(Ti,V,Fe,Al)₂₀O₃₈
UM2006-05-O:CaFeKMnNaREESrTiZr	(Sr,Na,K,REE)(Ca,Zr,Mn)(Ti,Fe)₁₈Fe₂O₃₈
UM2006-06-O:CaFeKMnNaREESrTiZr	(Sr,Na,K,REE)(Zr,Ca,Mn)(Ti,Fe)₁₈Fe₂O₃₈
UM2006-07-O:CaFeKMnNaREESrTiZr	(Na,Sr,K,REE)(Ca,Zr,Mn)(Ti,Fe)₁₈Fe₂O₃₈
UM2006-08-O:CaFeKMnNaREESrTiZr	(Na,Sr,K,REE)(Zr,Ca,Mn)(Ti,Fe)₁₈Fe₂O₃₈
UM2006-09-O:CaFeMnREESrTiZr	(Ce,Sr,REE)(Ca,Mn,Zr)Fe₂(Ti,Fe)₁₈O₃₈
Unnamed (HBU UK-4)	NaFe²⁺Zn₂(Ti,Fe³⁺,Nb)₆Ti₁₂O₃₈	Trig. 3 : R3

Related Minerals - Strunz-mindat Grouping Hide

4.00.	Goethite	α-Fe³⁺O(OH)	Orth. mmm (2/m 2/m 2/m)
4.00.	Microlite Group	A_2-mTa₂X_6-wZ_-n	Iso. m3m (4/m 3 2/m) : Fd3m
4.00.	Ferrotaaffeite-6N'3S	(Be,Zn,Mg)FeAl₄O₈	Trig. 3m (3 2/m) : R3m
4.00.	Pyrochlore Group	A₂Nb₂(O,OH)₆Z
4.00.	Písekite-(Y)	(Y,As,Ca,Fe,U)(Nb,Ti,Ta)O₄
4.00.	UM2004-19-O:AlCeGdZr	(Gd,Ce)₄Al₂Zr₄O₁₇
4.00.	UM2004-21-O:CaFeGdZr	Ca₂Gd₄Fe₅ZrO₁₅
4.00.	UM2004-27-O:GdTi	Gd₂Ti₄O₁₁
4.00.	Almeidaite	PbZn₂(Mn,Y)(Ti,Fe³⁺)₁₈O₃₇(OH,O)	Trig. 3 : R3
4.00.	Vapnikite	Ca₂CaUO₆	Mon. 2/m

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.

Internet Links for MapiquiroiteHide

mindat.org URL:

https://www.mindat.org/min-43876.html
Please feel free to link to this page.

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External Links:

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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

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References for MapiquiroiteHide

Reference List:

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01

(2023) Mapiquiroite. Handbook of Mineralogy. Mineralogical Society of America

Localities for MapiquiroiteHide

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.


Italy (TL)
Tuscany Lucca Province Stazzema Pontestazzemese ⓘ Buca della Vena Mine (TL)	Williams et al. (2013) +2 other references
Sant'Anna di Stazzema ⓘ Monte Arsiccio Mine (TL)	Williams et al. (2013) +2 other references

Mapiquiroite

About MapiquiroiteHide

Unique IdentifiersHide

IMA Classification of MapiquiroiteHide

Classification of MapiquiroiteHide

Mineral SymbolsHide

Physical Properties of MapiquiroiteHide

Optical Data of MapiquiroiteHide

Chemistry of MapiquiroiteHide

Crystallography of MapiquiroiteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of MapiquiroiteHide

Synonyms of MapiquiroiteHide

Relationship of Mapiquiroite to other SpeciesHide

Related Minerals - Strunz-mindat GroupingHide

Other InformationHide

Internet Links for MapiquiroiteHide

References for MapiquiroiteHide

Localities for MapiquiroiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide