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Sassolite

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Formula:
H3BO3
System:
Triclinic
Colour:
White to grey, ...
Lustre:
Pearly
Hardness:
1
Name:
Named after its discovery locality, Sasso, Tuscany, Italy.
This page provides mineralogical data about Sassolite.

Classification of Sassolite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
6.AA.05

6 : BORATES
A : Monoborates
A : BO3, without additional anions; 1(D).
24.3.1.1

24 : ANHYDROUS BORATES
3 : AmBn[XO3]p
9.1.1

9 : Borates
1 : Borates of the alkalis and boric acid
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http://www.mindat.org/min-3540.html
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Type Occurrence of Sassolite

Year of Discovery:
1800

Physical Properties of Sassolite

Pearly
Diaphaneity (Transparency):
Transparent
Colour:
White to grey, occasionally colourless, yellow or brown.
Streak:
White
Hardness (Mohs):
1
Cleavage:
Perfect
{001} micaceous
Density:
1.46 - 1.5 g/cm3 (Measured)    1.48 g/cm3 (Calculated)

Crystallography of Sassolite

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 7.02Å, b = 7.06Å, c = 6.59Å
α = 103.65°, β = 101.11°, γ = 59.98°
Ratio:
a:b:c = 0.994 : 1 : 0.933
Morphology:
Tabular crystals {001}, pseudohexagonal in development; rarely needle-lke [001]. Usually small scales; grouped in stalactitic forms at times. Coatings.
Twinning:
Common on twin axis [001].
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Sassolite

Type:
Biaxial (-)
RI values:
nα = 1.340 nβ = 1.456 nγ = 1.459
2V:
Measured: 5° , Calculated: 16°
Max Birefringence:
δ = 0.119
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none

Chemical Properties of Sassolite

Formula:
H3BO3
Essential elements:
All elements listed in formula:
Analytical Data:
Boric acid.

Relationship of Sassolite to other Species

6.AA.15NordenskiöldineCaSn4+[BO3]2
6.AA.15TusioniteMn2+Sn4+[BO3]2
6.AA.35Jimboite(Mn2+,Mg)3[BO3]2
6.AA.35KotoiteMg3[BO3]2
6.AA.40TakedaiteCa3[BO3]2
9.1.2MetaboriteHBO2
9.1.3DiomigniteLi2[B4O7]
9.1.4BiringucciteNa2B5O8(OH) · H2O
9.1.5NasiniteNa2[B5O8(OH)] · 2H2O
9.1.6KerniteNa2[B4O6(OH)2] · 3H2O
9.1.7EzcurriteNa4B10O17 · 7H2O
9.1.8TincalconiteNa2(B4O7) · 5H2O
9.1.9BoraxNa2(B4O5)(OH)4 · 8H2O
9.1.10AmeghiniteNa(H4B3O7)
9.1.11SborgiteNa[B5O6(OH)4] · 3H2O
9.1.12AristarainiteNa2MgB12O20 · 8H2O
9.1.13SantiteK[B5O6(OH)4] · 2H2O
9.1.14Larderellite(NH4)B5O7(OH)2 · H2O
9.1.15Ammonioborite(NH4)2[B5O6(OH)4]2 · H2O
9.1.16Rhodizite(K,Cs)Al4Be4(B,Be)12O28

Other Names for Sassolite

Other Information

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 Sassolite

Reference List:
Hofer, U.F. (1778): Memorie sopra il sale sedativo naturale di Toscana e del borace che da quello si compone. Firenze.
Mascagni, P. (1779): Dei lagoni del Senese e del Volterrano. Commentari. Siena.

Klaproth, M.H. (1802): Untersuchung des Sassolins, Beiträge zur chemischen Kenntniss der Mineralkörper, Dritter Band, Rottmann Berlin, 95-101

Karsten, D.L.G. (1808): Mineralogische Tabellen mit Rücksicht auf die neuesten Entdeckungen ausgearbeitet und mit erläuternden Anmerkungen versehen. H. A. Rottmann, Ed., Berlin, 105 pp. [sassolite at page 40].

Haushofer (1884), Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 9: 77.

Zachariasen (1934), Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 88: 150.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 662-663.

Zachariasen, W.H. (1954): The precise structure of orthoboric acid. Acta Crystallographica, 7, 305-310.
Smith, R.L. (1958): Some new occurrences of sassolite in the United States. American Mineralogist, 43, 1204-1205.
Grew, E.S. and Anovitz, L. M. (eds) (2002): Boron: Mineralogy, Petrology, and Geochemistry. Reviews in Mineralogy, 33.

Internet Links for Sassolite

Localities for Sassolite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Australian Jour.Min. v.6, no. 1
Chile
 
  • Antofagasta Region
    • El Loa Province
TESIS PARA OPTAR AL GRADO DE MAGÍSTER EN CIENCIAS, MENCIÓN GEOLOGÍA MEMORIA PARA OPTAR AL TÍTULO DE GEÓLOGO CONSTANZA BEATRIZ NICOLAU DEL ROURE EYLERTS, 2013
Germany
 
  • North Rhine-Westphalia
    • Aachen
      • Alsdorf
Sindern, S., Warnsloh, J. M., Witzke, T., Havenith, V., Neef, R. & Etoundi, Y. (2005): Mineralogy and geochemistry of vents formed on the burning coal mining waste dump Anna I, Alsdorf, Germany. Eur. J. Mineral. 17, Beih. 1, 130.
India
 
  • Jammu and Kashmir
No reference listed
Italy
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
Russo, M., 2006: I minerali di formazione fumarolica della grande eruzione vesuviana del 1906
Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
HOLLAND, 1813. GARAVELLI A., LAVIANO R., VURRO F. (1997): Sublimate deposition from hydrothermal fluids at the Fossa Crater - Vulcano, Italy. - European Journal of Mineralogy - 9, 2, 423-432.
            • Porto Levante
HOLLAND, 1813.
  • Tuscany
    • Pisa Province
      • Castelnuovo Val di Cecina
American Mineralogist (1957) 42, 56
      • Pomarance
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: 366; S. Merlino, F. Sartori: Can. Mineral. 27:159-165 (1970)
Japan
 
  • Hokkaido
    • Iburi Province
      • Usu-zan
Okamoto collection (curated at the Geological Survey museum, Japan)
  • Kyushu Region
    • Nansei Archipelago
      • Kagoshima Prefecture
        • Mishima village
fumarolic
Mozambique
 
  • Zambezia Province
    • Alto Ligonha District
Thomas, R., Davidson, P. (2010): Hambergite-rich melt inclusions in morganite crystals from the Muiane pegmatite, Mozambique and some remarks on the paragenesis of hambergite. - Mineralogy and Petrology, 100, 3-4, 227-23; Thomas, R., & Davidson, P. (2010). Hambergite-rich melt inclusions in morganite crystals from the Muiane pegmatite, Mozambique and some remarks on the paragenesis of hambergite. Mineralogy and Petrology, 100(3-4), 227-239.
Russia
 
  • Far-Eastern Region
    • Kamchatka Oblast'
[Der Aufschluss 1995:4 p163-180]
[Der Aufschluss 1995:4 p.163-180]
Tajikistan
 
  • Viloyati Mukhtori Gorno-Badakhshan (Viloyati Badakhshoni Kuni)
    • Pamir Mts
      • Rangkul' Highlands
Thomas, R., Davidson, P. (2010): Hambergite-rich melt inclusions in morganite crystals from the Muiane pegmatite, Mozambique and some remarks on the paragenesis of hambergite. - Mineralogy and Petrology, 100, 3-4, 227-23
USA
 
  • California
    • Inyo Co.
      • Death Valley
        • Furnace Creek
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 238, 254.
Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 238.
        • Ryan
          • Biddy McCarthy Mines
RRUFF Specimen R060496 - http://rruff.info/sassolite/names/asc/R060496
        • Twenty Mule Team Canyon
Allen, Robert D. & Henry C. Kramer (1957), Ginorite and sassolite from Death Valley, California, American Mineralogist: 42: 56-61; Erd, R.C., J.F. McAllister & H. Almond (1959), Gowerite, a new hydrous calcium borate from Death Valley, California: American Mineralogist: 44: 913; Schaller, Waldemar Theodore, et al (1965), American Mineralogist: 65: 629-640; McAllister, James Franklin (1970) Geology of the Furnace Creek borate area, Death Valley, Inyo County, California. California Division of Mines and Geology Map Sheet 14, 9 pp.; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 238.
Am Min 64:3-4 pp 369-375; Erd, R.C., J.F. McAllister, and G.D. Eberlein (1979) New data on hungchaoite, the second world occurrence, Death Valley region, California. American Mineralogist: 64: 369-375.
    • Kern Co.
      • Kramer District
        • Boron
Cal Div of Mines & Geology "Mineral Information Service" V. 22 N. 10 Oct 1969
Smith, George Irving, Hy Almond, & D.L. Sawyer, Jr. (1958), Sassolite from the Kramer borate district, California: American Mineralogist: 43: 1070; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 327, 333; Morgan, V. and Erd, R.C. (1969) Minerals of the Kramer borate district, California California Division of Mines and Geology Mineral Information Service: 22: 166; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 238.
Smith, George Irving, Hy Almond, & D.L. Sawyer, Jr. (1958), Sassolite from the Kramer borate district, California: American Mineralogist: 43: 1070; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 327; Morgan, V. and Erd, R.C. (1969) Minerals of the Kramer borate district, California California Division of Mines and Geology Mineral Information Service: 22: 166; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 238.
    • Lake Co.
      • Mayacmas Mts (Mayacamas Mts)
        • East Mayacmas District
          • Cobb
Veatch, John Allen (1867), Discovery of borax in California, in Browne and Taylor, Mineral resources of the states and territories west of the Mississippi: 180; Bailey, Gilbert E. (1902), The saline deposits of California: California Mining Bureau Bulletin 24: 54; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 238.
      • Sulphur Creek District (Sulfur Creek District; Wilbur Springs District)
        • Clear Lake Oaks
    • Sonoma Co.
      • Mayacmas Mts (Mayacamas Mts)
        • West Mayacmas District
Smith, Robert Leland (1958), Some new occurrences of sassolite in the United States: American Mineralogist: 43: 1204; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 239; Dunning, G. S. & Cooper, J. F. (1993): History and minerals of The Geysers Sonoma County, California. Mineralogical Record: 24(5): 339-352.
    • Tehama Co.
      • Bend
Bailey, Gilbert E. (1902), The saline deposits of California: California Mining Bureau Bulletin 24: 69; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 239.
  • Nevada
    • Washoe Co.
      • Steamboat Springs District
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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