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Probertite

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Formula:
NaCaB
 
5
O
 
7
(OH)
 
4
· 3H
 
2
O
System:MonoclinicColour: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

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/J.05-30
Nickel-Strunz 10th (pending) edition ID:6.EB.15

6 : BORATES
E : Pentaborates
B : Ino-pentaborates
Dana 8th edition ID: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
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Type Occurrence of Probertite

Type Locality:Baker mine, U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; U.S. Borax and Chemical Corp.; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Year of Discovery:1929

Physical Properties of Probertite

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

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:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
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°
Maximum Birefringence:δ = 0.029

Chart 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:
NaCaB
 
5
O
 
7
(OH)
 
4
· 3H
 
2
O
Simplified for copy/paste:NaCaB5O7(OH)4·3H2O
Essential elements:B, Ca, H, Na, O
All elements listed in formula:B, Ca, H, Na, O

Relationship of Probertite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
6.EB.05Larderellite
(NH
 
4
)B
 
5
O
 
7
(OH)
 
2
· H
 
2
O
6.EB.10Ezcurrite
Na
 
4
B
 
10
O
 
17
· 7H
 
2
O
6.EB.20Tertschite
Ca
 
4
B
 
10
O
 
19
· 20H
 
2
O
6.EB.25Priceite
Ca
 
2
B
 
5
O
 
7
(OH)
 
5
· H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
9.3.1Calciborite
Ca(B
 
2
O
 
4
)
9.3.2Sibirskite
Ca
 
2
(HB
 
2
O
 
5
)(OH)
9.3.3Fabianite
CaB
 
3
O
 
5
OH
9.3.4Uralborite
Ca
 
2
[B
 
3
O
 
3
(OH)
 
5
· OB(OH)
 
3
]
9.3.5Vimsite
CaB
 
2
O
 
2
(OH)
 
4
9.3.6Olshanskyite
Ca
 
3
[B(OH)
 
4
]
 
4
(OH)
 
2
9.3.7Frolovite
Ca[B(OH)
 
4
]
 
2
9.3.8Korzhinskite
Ca(B
 
2
O
 
4
) · H
 
2
O
9.3.9Tyretskite
Ca
 
2
B
 
5
O
 
9
OH · H
 
2
O
9.3.10Nifontovite
Ca
 
3
B
 
6
O
 
6
(OH)
 
12
(H
 
2
O)
 
2
9.3.12Inyoite
Ca(H
 
4
B
 
3
O
 
7
)(OH) · 4H
 
2
O
9.3.13Gowerite
Ca[B
 
5
O
 
8
(OH)][B(OH)
 
3
] · 3H
 
2
O
9.3.14Colemanite
Ca[B
 
3
O
 
4
(OH)
 
3
] · H
 
2
O
9.3.15Pentahydroborite
CaB
 
2
O(OH)
 
6
· 2H
 
2
O
9.3.16Hexahydroborite
Ca[B(OH)
 
4
]
 
2
· 6H
 
2
O
9.3.17Meyerhofferite
Ca
 
2
(H
 
3
B
 
3
O
 
7
)
 
2
· 4H
 
2
O
9.3.18Priceite
Ca
 
2
B
 
5
O
 
7
(OH)
 
5
· H
 
2
O
9.3.19Ginorite
Ca
 
2
B
 
14
O
 
23
· 8H
 
2
O
9.3.21Ulexite
NaCa[B
 
5
O
 
6
(OH)
 
6
] · 5H
 
2
O
9.3.22Hydroboracite
CaMg[B
 
3
O
 
4
(OH)
 
3
]
 
2
· 3H
 
2
O
9.3.23Inderborite
CaMg(H
 
3
B
 
3
O
 
7
)
 
2
· 8H
 
2
O
9.3.24Wardsmithite
Ca
 
5
Mg[B
 
4
O
 
7
]
 
6
· 30H
 
2
O
9.3.25Henmilite
Ca
 
2
Cu[B(OH)
 
4
]
 
2
(OH)
 
4
9.3.26Strontioborite
SrB
 
8
O
 
11
(OH)
 
4
9.3.27Veatchite
Sr
 
2
B
 
11
O
 
16
(OH)
 
5
· H
 
2
O
9.3.28Veatchite-A
Sr
 
2
B
 
11
O
 
16
(OH)
 
5
· H
 
2
O
9.3.29 P-Veatchite
9.3.30 Balavinskite
Sr
 
2
B
 
6
O
 
11
· 4H
 
2
O
9.3.31Tunellite
SrB
 
6
O
 
9
(OH)
 
2
· 3H
 
2
O
9.3.32Strontioginorite
(Sr,Ca)
 
2
B
 
14
O
 
23
· 8H
 
2
O

Other Names for Probertite

Synonyms:
BoyditeKramerite
Other Languages:
German:Kramerit
Probertit
Russian:Пробертит
Spanish:Kramerita
Probertita

Other Information

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

Best Localities for Probertite

Best of Species:Probertite

Internet Links for Probertite

Search Engines:
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  • External Links:
  • Look for Probertite on Webmineral
  • Look for Probertite on Athena Mineralogy
  • Look for Probertite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Probertite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Fabre Minerals - search for Probertite specimens
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  • Specimens:The following Probertite specimens are currently listed for sale on minfind.com.

    Localities for Probertite

    The 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. ? 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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