Lucabindiite

(K,NH4)As4O6(Cl,Br)
IMA status
  • Approved
IMA symbol
Lbd
Discovered
1992
IMA approved
2011
Also known as
  • IMA2011-010
  • Lucabindiiet

Where it forms, where it's found

Geological setting

fumerole

Type locality
La Fossa crater
  1. Vulcano Island
  2. Lipari
  3. Eolie Islands (Aeolian Islands)
  4. Metropolitan City of Messina
  5. Sicily
  6. Italy

38.4034°, 14.9614°

4recorded occurrences
Source · OpenStreetMap

Safety & handling

Physical

Transparency
Transparent
Colour
colorless to white
Streak
white
Fracture
None observed
Density
3.68 g/cm³

Optical

UV response
non-fluorescent

Crystallography

Crystal system
Hexagonal
Space group
P6/mmm
Cell parameters
a = 5.2386(7) Å · c = 9.014(2) Å
Unit cell volume
214.23 ų
Z
1
Morphology

Hexagonal and platy crystals

Type-locality form

As aggregates of micrometer-sized hexagonal and platy crystals on the surface of the pyroclastic breccia

Crystal structure

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
33AsArsenicArsenic474.922299.688
52.75%
8OOxygenOxygen615.99995.994
16.89%
35BrBromineBromine179.90479.904
14.06%
19KPotassiumPotassium139.09839.098
6.88%
17ClChlorineChlorine135.45035.450
6.24%
7NNitrogenNitrogen114.00714.007
2.47%
1HHydrogenHydrogen41.0084.032
0.71%
Total568.173100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From IMA formula

Synonyms

  • IMA2011-010
  • Lucabindiiet

In other languages

German
IMA 2011-010 · Lucabindiit
Italian
lucabindiite

Classification

Strunz
10th ed.

3.DC

  • 3HalidesClass
  • 3.DOxyhalides, hydroxyhalides and related double halidesDivision
  • 3.DCWith Pb (As,Sb,Bi), without CuGroup
  • 3.DCLucabindiiteSpecies

Group, growth & confusion

In the same group
8 members
Commonly confused with
1 mineral

Literature, links & citation

Citations
  1. 2011Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011, CNMNC Newsletter No. 10. Mineralogical Magazine, 75 (5) 2549-2561 doi:10.1180/minmag.2011.075.5.2549 DOI: 10.1180/minmag.2011.075.5.2549
  2. 2013Garavelli, A., Mitolo, D., Pinto, D., Vurro, F. (2013) Lucabindiite, (K,NH4)As4O6(Cl,Br), a new fumarole mineral from the "La Fossa" crater at Vulcano, Aeolian Islands, Italy. American Mineralogist, 98 (2) 470-477 doi:10.2138/am.2013.4194 DOI: 10.2138/am.2013.4194
  3. 2017(2017) Lucabindiite. Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Lucabindiite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/lucabindiite-41602},
  note      = {Accessed 2026-05-11}
}