https://www.edelsteine-neuburg.de
https://www.mineral-bosse.de
https://www.mineralbox.biz
http://www.spessartit.de/walldorf.html
https://www.mineraliengrosshandel.com
'._('einklappen').'
 

Lombardoite

Pictures (1 Images total)

Lombardoit
Views (File:
1582999984
): 259
Lombardoit
brauner Lombardoit in Quarz, Valletta Mine, Aisone, Cuneo Province, Piemont, Italien; BB ~ 1 mm
Copyright: Joy Desor; Contribution: openpit
Location: Italien/Piemont (Piemonte), Region/Cuneo, Provinz/Dora-Maira-Massiv/Valle Maira/Canosio/Vallone della Valletta/La Valletta Mine
Mineral: Lombardoite
Image: 1582999984
License: Usage for Mineralienatlas project only
Lombardoit

brauner Lombardoit in Quarz, Valletta Mine, Aisone, Cuneo Province, Piemont, Italien; BB 1 mm
Copyright: Joy Desor
Contribution: openpit 2020-02-29
Locality: La Valletta Mine / Vallone della Valletta / Canosio / Valle Maira / Dora-Maira-Massiv / Cuneo, Provinz / Piemont (Piemonte), Region / Italien

Collectors Summary

Crystal System monoklin, P21/m

Additional information / Summary

Lombardoit kommt Polytyp vor:

P21/m, a= 7.864Å, b = 6.134 Å, c = 9.120 Å, β = 112.66°

P1, a = 14.300 Å, b = 6.118 Å, c = 9.420 Å, α = 90.008°, β = 100.013°, γ = 102.299°

Chemism

Chemical formula

Ba2Mn3+(AsO4)2(OH)

Chemical composition

Arsen, Barium, Mangan, Sauerstoff, Wasserstoff

Unit weight: 624.4394709 u; Number of atoms in the formula: 15

Info

Empirical formula:

Ba2Mn(AsO4)2(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.16

1

6.67

1.0079470

1.0079470
Oxygen

O

23.06

9

60.00

15.9994300

143.9948700
Manganese

Mn

8.80

1

6.67

54.9380499

54.9380499
Arsenic

As

24.00

2

13.33

74.9216020

149.8432040
Barium

Ba

43.98

2

13.33

137.3277000

274.6554000

Strunz 9th edition incl. updates

8.BG.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
G: Mit mittelgroßen und großen [Kationen] (OH, etc.):RO4 = 0.5:1
05:Brackebuschit-Gruppe

IMA status

anerkannt - CNMNC Newsletter No. 33, Oktober 2016

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Brackebuschite supergroup  ⇒ Brackebuschite group

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

7.8636(1)

Cell parameters b (Å)

6.13421(8)

Cell parameters c (Å)

9.1197(1)

Cell parameters a/b or c/a

1.282

Cell parameters c/b

1.487

Cell parameters α

90°

Cell parameters β

112.660(2)°

Cell parameters γ

90°

Z

2

Volumne (ų)

405.949

Kristall structure

Struktur bestimmt

X-Ray Powder Diffraction

6.985(39), 3.727(33), 3.314(100), 3.073(24), 3.036(33), 3.034(33), 2.813(87), 2.807(87)
XRD chart Lombardoite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Density (g/cm³)

5.124 ber.

5.108 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

Italien/Piemont (Piemonte), Region/Cuneo, Provinz/Dora-Maira-Massiv/Valle Maira/Canosio/Vallone della Valletta/La Valletta Mine

Type material

Museo Regionale di Scienze Naturali, Sezione di Mineralogia, Petrografia e Geologia, via Giovanni Giolitti 36, I-10123 Torino, Italien

Collection number of type material

M/U 17111

Paragenesis of type material

Quarz, Aegirin, Baryt, Calcit, Hämatit, Muscovit, Kryptomelan, Braunit, Manganberzeliit

Preface

Name from

Bruno Lombardo (1944–2014), Geologe und Petrologe am C.N.R. (National Research Council of Italy)

Author (Name, Year)

Fernando Cámara; Lisa Baratelli; Marco E. Ciriotti; Fabrizio Nestola; Gian Carlo Piccoli, Ferdinando Bosi; Erica Bittarello; Ulf Hålenius; Corrado Balestra (2022)

References

Cámara, F., Bosi, F., Ciriotti, M.E., Bittarello, E., Hålenius, U. and Balestra, C. - Lombardoite, IMA 2016-058. CNMNC Newsletter No. 33, October 2016, page 1141; Mineralogical Magazine, 80 (2016), 1135–1144.

Fernando Cámara; Lisa Baratelli; Marco E. Ciriotti; Fabrizio Nestola; Gian Carlo Piccoli, Ferdinando Bosi; Erica Bittarello; Ulf Hålenius; Corrado Balestra: As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: IV. Lombardoite, Ba2Mn3+(AsO4)2(OH) and aldomarinoite, Sr2Mn3+(AsO4)2(OH), description and crystal structure. Mineralogical Magazine Vol. 86, Nr. 3 (2022) S. 447-458. doi: 10.1180/mgm.2022.31

Fernando Cámara, Ciriotti E. Marco - POLYTYPISM, TOPOLOGICAL AND CRYSTALCHEMICAL RELATIONS AMONG NATROCHALCITE GROUP AND BRACKEBUSCHITE GROUP MINERALS - Resarchgate 2016

IMA group assignments

 
Brackebuschite supergroup
 
 
 

 
 
Brackebuschite group
M2+2M3+(TO4)2(OH)
 
 

 
 
 
Arsenbrackebuschite
Pb2(Fe3+,Zn)(AsO4)2(OH,H2O)
monoklin
P21/m

 
 
 
Arsentsumebite
Pb2Cu(AsO4)(SO4)OH
monoklin
P21/m

 
 
 
Bearthite
Ca2Al(PO4)2(OH)
monoklin
P21/m

 
 
 
Brackebuschite
Pb2Mn3+(VO4)2(OH)
monoklin
P21/m

 
 
 
Calderónite
Pb2Fe3+[OH|(VO4)2]
monoklin
P21/m

 
 
 
Canosioite
Ba2Fe3+(AsO4)2(OH)
monoklin
P21/m

 
 
 
Feinglosite
Pb2Zn(AsO4)2·H2O
monoklin
P21, P21/m

 
 
 
Ferribushmakinite
Pb2Fe3+(PO4)(VO4)(OH)
monoklin
P21/m

 
 
 
Gamagarite
Ba2Fe3+(VO4)2(OH)
monoklin
P21/m

 
 
 
Goedkenite
(Sr,Ca)2Al(PO4)2(OH)
monoklin
P21/m

 
 
 
Grandaite
Sr2Al(AsO4)2(OH)
monoklin
P21/m

 
 
 
Heyite
Pb5Fe22+(VO4)2O4
monoklin
P21/m

 
 
 
Lombardoite
Ba2Mn3+(AsO4)2(OH)
monoklin
P21/m

 
 
 
Tokyoite
Ba2Mn(VO4)2(OH)
monoklin
P21/m

 
 
 
Tsumebite
Pb2Cu(PO4)(SO4)(OH)
monoklin
P21/m

Refresh list

Actuality: 30. Jan 2023 - 13:34:49

Other languages

German

Lombardoit

English

Lombardoite

Russian

Ломбардоит

CNMNC (IMA)-Number

IMA 2016-058

CNMNC symbol

Symbol

Lmb

Locations with GPS information