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Larderellite

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About LarderelliteHide

Formula:
(NH4)B5O7(OH)2 · H2O
Colour:
White, yellowish due to impurities; colourless in transmitted light
Crystal System:
Monoclinic
Name:
After F. de Larderell, a Proprietor of the Tuscan borax industry.
Dimorph of:
This page provides mineralogical data about Larderellite.


Classification of LarderelliteHide

Approved, 'Grandfathered' (first described prior to 1959)
6.EB.05

6 : BORATES
E : Pentaborates
B : Ino-pentaborates
26.5.4.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
9.1.14

9 : Borates
1 : Borates of the alkalis and boric acid

Physical Properties of LarderelliteHide

Transparency:
Translucent
Colour:
White, yellowish due to impurities; colourless in transmitted light
Cleavage:
Perfect
On {001} (?) and {010} (?).

Optical Data of LarderelliteHide

Type:
Biaxial (+)
RI values:
nα = 1.509 nβ = 1.520 nγ = 1.561
2V:
Measured: 64° , Calculated: 56°
Max Birefringence:
δ = 0.052
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
none

Chemical Properties of LarderelliteHide

Formula:
(NH4)B5O7(OH)2 · H2O

Crystallography of LarderelliteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 11.63 Å, b = 7.61 Å, c = 9.44 Å
β = 96.75°
Ratio:
a:b:c = 1.528 : 1 : 1.24
Unit Cell V:
829.69 ų (Calculated from Unit Cell)
Morphology:
Microscopic rhomboidal tablets flattened {100}. The acute plane angle of the rhombs is ~ 68°.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.45 Å(50)
5.44 Å(71)
5.12 Å(50)
4.70 Å(100)
2.960 Å(71)
2.921 Å(100)
2.887 Å(100)

Type Occurrence of LarderelliteHide

Geological Setting of Type Material:
Boric acid fumaroles in a volcanic region.
Associated Minerals at Type Locality:

Other Language Names for LarderelliteHide

Related Minerals - Nickel-Strunz GroupingHide

6.EB.10EzcurriteNa4B10O17 · 7H2OTric. 1 : P1
6.EB.15ProbertiteNaCaB5O7(OH)4 · 3H2OMon. 2/m
6.EB.20TertschiteCa4B10O19 · 20H2O
6.EB.25PriceiteCa2B5O7(OH)5 · H2OMon. 2/m : P21/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

9.1.1SassoliteH3BO3Tric. 1 : P1
9.1.2MetaboriteHBO2Iso.
9.1.3DiomigniteLi2[B4O7]Tet.
9.1.4BiringucciteNa2B5O8(OH) · H2OMon.
9.1.5NasiniteNa2[B5O8(OH)] · 2H2OOrth.
9.1.6KerniteNa2[B4O6(OH)2] · 3H2OMon. 2/m : P2/b
9.1.7EzcurriteNa4B10O17 · 7H2OTric. 1 : P1
9.1.8TincalconiteNa2(B4O7) · 5H2OTrig. 3 2 : R3 2
9.1.9BoraxNa2(B4O5)(OH)4 · 8H2OMon. 2/m : B2/b
9.1.10AmeghiniteNa(H4B3O7)Mon.
9.1.11SborgiteNa[B5O6(OH)4] · 3H2OMon.
9.1.12AristarainiteNa2MgB12O20 · 8H2OMon. 2/m : P21/b
9.1.13SantiteK[B5O6(OH)4] · 2H2OOrth.
9.1.15Ammonioborite(NH4)2[B5O6(OH)4]2 · H2OMon. 2/m : B2/b
9.1.16Rhodizite(K,Cs)Al4Be4(B,Be)12O28Iso. 4 3m : P4 3m

Other InformationHide

Notes:
Decomposed by hot water.
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 LarderelliteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mascagni (1806) Viagg. Tosc.: 3.
Beudant, F.S. (1832), Trailé élémentaire de Minéralogie, second edition, 2 volumes: 2: 249 (as Borate de Chaux).
Alger-Phillips (1844): 318 (as Borocalcite).
Bechi, E. (1854) Analysis of several native borates: larderellite, (new species). American Journal of Science: 67: 129-130.
Forbes, D. (1863) On the chemical composition of some Chilian minerals. Philosophical Magazine and Journal of Science: 25: 103-114. (as Hayesine, pg 113)
Dana, J.D. (1868) System of Mineralogy, 5th. Edition, New York: 597 (as Bechilite).
D'Achiardi, A. (1872) Mineralogia Della Toscana: 1: 258.
Des Cloizeaux, A. (1874) Manuel de minéralogie. 2 volumes and Atlas, Paris. volume 2, 1 Fasc., 208pp.: 2: 9.
D'Achiardi, G. (1900) Rendus Reale accademia nazionale dei Lincei, Rome: 9: 342.
van't Hoff (1907) Akademie der Wissenschaften, Berlin (Sitzungsberichte der): 652.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 98.
D'Achiardi, G. (1930) Nuovi dati e ricerche sulla larderellite. Periodico di Mineralogia - Roma: 1: 208-213.
Millosevich, F. (1930) Larderellite e paternoite. Periodico di Mineralogia - Roma: 1: 214-215.
D'Achiardi G. (1932) Considerazioni e ricerche sulla larderellite, ammonioborite (?) e bechilite (?) di Larderello (Pisa). Periodico di Mineralogia - Roma: 3: 36-42.
Hintze, C. (1933) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: 1 [4A]: 165.
Schaller, W.T. (1933) Ammonioborite, a new mineral. American Mineralogist: 18: 480-492.
Palache, C., Berman, H., Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 365-366.
Clark, J.R., Christ, C.L. (1959) Studies of borate minerals (VII): X-Ray studies of ammonioborite, larderellite, and the potassium and ammonium pentaborate tetrahydrates. American Mineralogist: 44: 1150-1158.
Clark, J.R. (1960) X-ray crystallography of larderellite, NH4B5O6(OH)4. American Mineralogist: 45: 1087-1093.
Merlino, S., Sartori, F. (1969) The crystal structure of larderellite, NH4B5O7(OH)2·H2O. Acta Crystallographica: B25: 2264-2270.
Grew, E.S., Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Anderson, Y.E., Bubnova, R.S., Filatov, S.K., Polyakova, I.G., Krzhizhanovskaya, M.G. (2005) Thermal behavior of larderellite, NH4[B5O7(OH)2]·H2O. Zapiski Rossiiskogo Mineralogicheskogo Obshchetstva: 134(1): 103-113.

Internet Links for LarderelliteHide

Localities for LarderelliteHide

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
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Campostrini, I., Demartin, F., Gramaccioli, C. M. & Russo, M. (2011): Vulcano - Tre secoli di mineralogia. Associazione Micro-mineralogia Italiana, Cremona, Italy, 344 pp.
  • Tuscany
    • Pisa Province
      • Pomarance
D'Achiardi G. (1930): - Nuovi dati e ricerche sulla larderellite. Periodico di Mineralogia - Roma pp. 208-213; Millosevich F. (1930)- Larderellite e paternoite. pp. 214-215. Periodico di Mineralogia - Roma and D'Achiardi G. (1932): Considerazioni e ricerche sulla larderellite, ammonioborite (?) e bechilite (?) di Larderello (Pisa). Periodico di Mineralogia - Roma pp. 36-42; Chukanov, N.V. (2014) Infrared spectroscopy of minerals. Extended library. Volume 1. Springer, Dordrecht Heidelberg New York London, page 46 and 67.
 
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