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Probertite

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Formula:
NaCaB5O7(OH)4 · 3H2O
System:
Monoclinic
Colour:
Colourless; colourless ...
Hardness:
Name:
After Frank H. Probert, Dean of the Mining College, University of California.
This page provides mineralogical data about Probertite.

Classification of Probertite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
6.EB.15

6 : BORATES
E : Pentaborates
B : Ino-pentaborates
26.5.12.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
9.3.20

9 : Borates
3 : Borates of Ca and Sr
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http://www.mindat.org/min-3285.html
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First Recorded Occurrence of Probertite

Year of Discovery:
1929

Physical Properties of Probertite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colourless; colourless in transmitted light
Streak:
White
Hardness (Mohs):
Tenacity:
Brittle
Cleavage:
Perfect
On {110}.
Density:
2.14 g/cm3 (Measured)    2.13 g/cm3 (Calculated)

Crystallography of Probertite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 13.43Å, b = 12.57Å, c = 6.58Å
β = 100.25°
Ratio:
a:b:c = 1.068 : 1 : 0.523
Unit Cell Volume:
V 1,093.08 ų (Calculated from Unit Cell)
Morphology:
Crystals aggregated into rosettes or radial groups of needles or laths. Spherulitic; as tough, compactly reticulated aggregates. Single crystals rare. Crystals acicular [001], commonly flattened {100} (slightly to considerably); also flattened {110}, rare. Faces "b," "a," and "m" usually striated [001] and rounded.
Twinning:
Doubtful under the microscope.
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 Probertite

Type:
Biaxial (+)
RI values:
nα = 1.514 nβ = 1.524 nγ = 1.543
2V:
Measured: 73° , Calculated: 74°
Max Birefringence:
δ = 0.029
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
relatively weak

Chemical Properties of Probertite

Formula:
NaCaB5O7(OH)4 · 3H2O
Essential elements:
All elements listed in formula:

Relationship of Probertite to other Species

6.EB.05Larderellite(NH4)B5O7(OH)2 · H2O
6.EB.10EzcurriteNa4B10O17 · 7H2O
6.EB.20TertschiteCa4B10O19 · 20H2O
6.EB.25PriceiteCa2B5O7(OH)5 · H2O
9.3.1CalciboriteCa(B2O4)
9.3.2SibirskiteCa2(HB2O5)(OH)
9.3.3FabianiteCaB3O5OH
9.3.4UralboriteCa2[B3O3(OH)5 · OB(OH)3]
9.3.5VimsiteCaB2O2(OH)4
9.3.6OlshanskyiteCa3[B(OH)4]4(OH)2
9.3.7FroloviteCa[B(OH)4]2
9.3.8KorzhinskiteCa(B2O4) · H2O
9.3.9TyretskiteCa2B5O9OH · H2O
9.3.10NifontoviteCa3B6O6(OH)12(H2O)2
9.3.12InyoiteCa(H4B3O7)(OH) · 4H2O
9.3.13GoweriteCa[B5O8(OH)][B(OH)3] · 3H2O
9.3.14ColemaniteCa[B3O4(OH)3] · H2O
9.3.15PentahydroboriteCaB2O(OH)6 · 2H2O
9.3.16HexahydroboriteCa[B(OH)4]2 · 6H2O
9.3.17MeyerhofferiteCa2(H3B3O7)2 · 4H2O
9.3.18PriceiteCa2B5O7(OH)5 · H2O
9.3.19GinoriteCa2B14O23 · 8H2O
9.3.21UlexiteNaCa[B5O6(OH)6] · 5H2O
9.3.22HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
9.3.23InderboriteCaMg(H3B3O7)2 · 8H2O
9.3.24WardsmithiteCa5Mg[B4O7]6 · 30H2O
9.3.25HenmiliteCa2Cu[B(OH)4]2(OH)4
9.3.26StrontioboriteSrB8O11(OH)4
9.3.27VeatchiteSr2B11O16(OH)5 · H2O
9.3.28Veatchite-ASr2B11O16(OH)5 · H2O
9.3.29 P-Veatchite
9.3.30 BalavinskiteSr2B6O11 · 4H2O
9.3.31TunelliteSrB6O9(OH)2 · 3H2O
9.3.32Strontioginorite(Sr,Ca)2B14O23 · 8H2O

Other Names for Probertite

Name in Other Languages:

Other Information

Other Information:
Readily soluble in dilute acids. Partially decomposed in hot or cold water, with Na being leached relative to Ca.
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 Probertite

Reference List:
Eakle, A.S. (1929), Probertite, a new borate, American Mineralogist: 14: 427-430.

Schaller (1929) USGS Professional Paper 158: 137.

Foshag (1931) American Mineralogist: 16: 338.

Barnes (1949) American Mineralogist: 34: 19, 611.

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: 343-345.

Clark, J.R. & C.L. Christ (1959), Studies of borate minerals, V: Reinvestigation of the X-ray crystallography of ulexite and probertite: American Mineralogist: 44: 712-719.

Rumanova, I.M., Kurbanova, K.M., and Belov, N.V. (1966) Determination of the crystal structure of probertite CaNa[B5O7(OH)4]. Soviet Physics-Crystallography: 10: 513-522.

Acta Crystallographica (1982): B38: 3072-3075.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Probertite

Specimens:
The following Probertite specimens are currently listed for sale on minfind.com.

Localities for Probertite

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.
Argentina
 
  • Salta
    • Salar Del Hombre Muerto
Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, p. 497.; Alonso, R. N. (1999). On the origin of La Puna borates. Acta geológica hispánica, 34(2), 141-166.; CAHIT HELVACI & RICARDO N. ALONSO (2000) Borate Deposits of Turkey and Argentina; A Summary and Geological Comparison. Turkish Journal of Earth Sciences, 9:1-27.
Canada
 
  • Nova Scotia
    • Hants Co.
      • West Hants
CanRockhound v.6, n.1 (2001)
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Canchas
American Mineralogist: 79: 1003-1008.
  • Tarapacá Region
    • El Tamarugal Province
American Mineralogist: 79: 1003-1008.
Germany
 
  • Thuringia
    • Harz
      • Nordhausen
        • Niedersachswerfen
Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
Turkey
 
  • Aegean Region
    • Kütahya Province
      • Emet
        • Doğanlar village
J. García-Veigas, L. Rosell, X. Alcobé, I. Subias, F. Ortí, I. Gündogan and C. Helvaci (2010) Fontarnauite, a New Sulphate-Borate Mineral from the Emet Borate District (Turkey). Macla 13, 97-98.
  • Central Anatolia Region
    • Eskişehir Province
      • Kirka
García-Veigas, J., & Helvacı, C. (2013). Mineralogy and sedimentology of the Miocene Göcenoluk borate deposit, Kırka district, western Anatolia, Turkey. Sedimentary Geology, 290, 85-96.
  • Marmara Region
    • Balikesir Province
      • Bigadiç
CAHIT HELVACI & RICARDO N. ALONSO (2000) Borate Deposits of Turkey and Argentina; A Summary and Geological Comparison. Turkish Journal of Earth Sciences, Vol. 9, 2000, pp. 1-27
    • Bursa Province
      • Mustafa Kemalpafla
CAHIT HELVACI & RICARDO N. ALONSO (2000) Borate Deposits of Turkey and Argentina; A Summary and Geological Comparison. Turkish Journal of Earth Sciences, Vol. 9, 2000, pp. 1-27; Helvaci, C. (1994). Mineral assemblages and formation of the Kestelek and Sultancayir borate deposits. Proc. 29th Intl. Geol. Congr. Part A, 245-284.; Helvaci, C., Mordogan, H., Çolak, M., & Gündogan, I. (2004). Presence and distribution of lithium in borate deposits and some recent lake waters of west-central Turkey. International Geology Review, 46(2), 177-190.
USA
 
  • California
    • Inyo Co.
      • Death Valley
Econ Geol (1996) 91:622-635
      • Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan area)
        • Ryan
Foshag, William Frederick (1931b), Probertite from Ryan, California: American Mineralogist: 16: 338-341; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 376.
Foshag, William Frederick (1931b), Probertite from Ryan, California: American Mineralogist: 16: 338-341; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 256.
Mineralogical Record: 27: 35-40.
Anonymous (1963), California Division of Mines and Geology, Mineral Information Service: California Mineral Production 1962: 16(1): 9; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 154, 377; Nevada Bureau of Mines and Geology Report 26, "Guidebook: Las Vegas to Death Valley and Return," Mackay School of Mines, University of Nevada - Reno, 1976.; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 256.
Foshag, William Frederick (1931b), Probertite from Ryan, California: American Mineralogist: 16: 338-341; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 256.
Am Min (1931), 16:338-341
      • Resting Spring Range
Noble, Levi Fatzinger (1926b), Note on a colemanite deposit near Shoshone, California, with a sketch of the geology of a part of Amargosa Valley: USGS Bulletin 785: 63, 72; Nolan, Thomas Brennan (1964), Geological Survey Research 1963, Summary of investigations: USGS PP 475-A: 11; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 249, 256.
      • Saratoga District (Tecopa Mountain District; Shoshone District ?)
        • Dublin Hills
          • Shoshone
Nolan, Thomas Brennan (1964), Geological Survey Research 1963, Summary of investigations: USGS PP 475-A: 11. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 153.
Nolan, Thomas Brennan (1964), Geological Survey Research 1963, Summary of investigations: USGS PP 475-A: A-11; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 295, 377.
    • Kern Co.
      • Kramer District
www.mineralsocal.org
Eakle, Arthur Starr (1929), Probertite, a new borate: American Mineralogist: 14: 427-430; Schaller, Waldemar Theodore (1930), Borate minerals from the Kramer district, Mohave Desert, California: USGS PP 158-I: 137-170; […Mineralogical Magazine: 22: 622 (1931)]: 139; Murdoch, Joseph (1945), Probertite from Los Angeles County, California: American Mineralogist: 30: 720; Gale, Hoyt Stoddard (1946), Geology of the Kramer borate district, Kern County, California: California Division Mines Report 42: 362; Morgan, V. and Erd, R.C. (1969) Minerals of the Kramer borate district, California California Division of Mines and Geology Mineral Information Service: 22(9): 152, Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 132, 256; 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: 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: 147; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 137.
Amer.Min.(1928) 13, 452-453; Nickel & Nichols (1991) Mineral Reference Maual
P Haas collection; Have collected them in the mine-Rock Currier
    • Los Angeles Co.
Foshag, William Frederick (1918), Ulexite from Lang, California: American Mineralogist: 3: 35; Foshag, William Frederick (1921), The origin of the colemanite deposits of California: Economic Geology: 16: 199-214; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 377.
        • Tick Canyon
          • Tick Canyon Borate deposit
Murdoch, Joseph (1945), Probertite from Los Angeles County, California: American Mineralogist: 30: 719-721; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 258.
  • Oklahoma
    • Blaine Co.
      • Southard
Rocks & Minerals 72:4 pp 252-264
      • Watonga
Rocks & Min. vol. 72 (1997)
    • Custer Co.
Rocks & Minerals: 72(4): 252-264.
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