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Probertite

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Probertite

Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany
Probertite

U.S. Borax open pit, U.S. Borax Mine, Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Probertite

Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany
Probertite

Bandırma, Balikesir Province, Marmara Region, Turkey
Probertite

Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany
Probertite

U.S. Borax open pit, U.S. Borax Mine, Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Probertite

Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany
Probertite

Bandırma, Balikesir Province, Marmara Region, Turkey
Probertite

Kohnstein Quarry, Niedersachswerfen, Nordhausen, Harz, Thuringia, Germany
Probertite

U.S. Borax open pit, U.S. Borax Mine, Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Formula:
NaCaB5O7(OH)4 · 3H2O
System:
Monoclinic
Colour:
Colourless; colourless ...
Lustre:
Vitreous
Hardness:
3½
Name:
After Frank H. Probert, Dean of the Mining College, University of California.
This page provides mineralogical data about Probertite.


Classification of Probertite

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)
Strunz 8th ed.:
5/J.05-30
Nickel-Strunz 10th (pending) ed.:
6.EB.15

6 : BORATES
E : Pentaborates
B : Ino-pentaborates
Dana 8th ed.:
26.5.12.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
5 : Pentaborates
Hey's CIM Ref.:
9.3.20

9 : Borates
3 : Borates of Ca and Sr

Physical Properties of Probertite

Lustre:
Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
Colourless; colourless in transmitted light
Streak:
White
Hardness (Mohs):
3½
Tenacity:
Brittle
Cleavage:
Perfect
On {110}.
Density:
2.14 g/cm3 (Measured)    2.13 g/cm3 (Calculated)

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
Elements listed in formula:
B, Ca, H, Na, O - search for minerals with similar chemistry

Crystallography of Probertite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 13.43 Å, b = 12.57 Å, c = 6.58 Å
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.

Type Occurrence of Probertite

Type Locality:
Baker Mine, U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; Boron open pit; U.S. Borax and Chemical Corporation Mine; Kramer Mine; Kramer pit; Baker Mine), Kramer Borate deposit, Boron, Kramer District (Kramer Borate District), Kern Co., California, USA

Relationship of Probertite to other Species

Related Minerals - Nickel-Strunz Grouping):
6.EB.05LarderelliteNH4B5O7(OH)2 · H2O
6.EB.10EzcurriteNa2B5O7(OH)3 · 2H2O
6.EB.20TertschiteCa4B10O19 · 20H2O
6.EB.25PriceiteCa2B5O7(OH)5 · H2O
Related Minerals - Hey's Index Grouping:
9.3.1CalciboriteCaB2O4
9.3.2SibirskiteCaHBO3
9.3.3FabianiteCaB3O5(OH)
9.3.4UralboriteCaB2O2(OH)4
9.3.5VimsiteCaB2O2(OH)4
9.3.6OlshanskyiteCa2[B3O3(OH)6]OH · 3H2O
9.3.7FroloviteCa[B(OH)4]2
9.3.8KorzhinskiteCaB2O4 · 0.5H2O
9.3.9TyretskiteCa2B5O9(OH) · H2O
9.3.10NifontoviteCa3[BO(OH)2]6 · 2H2O
9.3.12InyoiteCaB3O3(OH)5 · 4H2O
9.3.13GoweriteCa[B5O8(OH)][B(OH)3] · 3H2O
9.3.14ColemaniteCaB3O4(OH)3 · H2O
9.3.15PentahydroboriteCaB2O(OH)6 · 2H2O
9.3.16HexahydroboriteCa[B(OH)4]2 · 2H2O
9.3.17MeyerhofferiteCaB3O3(OH)5 · H2O
9.3.18PriceiteCa2B5O7(OH)5 · H2O
9.3.19GinoriteCa2B14O20(OH)6 · 5H2O
9.3.21UlexiteNaCaB5O6(OH)6 · 5H2O
9.3.22HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
9.3.23InderboriteCaMg[B3O3(OH)5]2 · 6H2O
9.3.24WardsmithiteCa5Mg(B4O7)6 · 30H2O
9.3.25HenmiliteCa2Cu[B(OH)4]2(OH)4
9.3.26StrontioboriteSrB8O11(OH)4
9.3.27VeatchiteSr2[B5O8(OH)]2B(OH)3 · H2O
9.3.28Veatchite-ASr2B11O16(OH)5 · H2O
9.3.29 P-VeatchiteSr2B11O16(OH)5 · H2O
9.3.30 BalavinskiteSr2B6O11 · 4H2O
9.3.31TunelliteSrB6O9(OH)2 · 3H2O
9.3.32StrontioginoriteSrCaB14O20(OH)6 · 5H2O

Other Names for Probertite

Synonyms:

Boydite

Kramerite

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

mindat.org URL:
https://www.mindat.org/min-3285.html
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    Localities for Probertite

    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.
    (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
      • Los Andes department
        • 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.
    		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.
    Koçak, İ. & Koç, Ş. (2016): Geochemical characteristics of Kırka (Sarıkaya) borate deposit, northwestern Anatolia, Turkey. Journal of Earth System Science: 125: 147-164; http://forum.amiminerals.it/viewtopic.php?f=5&t=12548 (2016)
    • 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 (Kramer Borate 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; Frondel C, Morgan V (1956) Inderite and gerstleyite from the Kramer borate district, Kern County, California. American Mineralogist 41, 839-843
    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.
    Mineral and/or Locality  
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