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Darapskite

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About DarapskiteHide

Formula:
Na3(SO4)(NO3) · H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
Crystal System:
Monoclinic
Name:
Named in honor of Ludwig Darapsky (1857–1916), German–Chilean chemist and mineralogist, Santiago, Chile.
Often occurs in cavities or crevices in massive nitrate rock or as a surficial concentration (Chile).


Classification of DarapskiteHide

Approved, 'Grandfathered' (first described prior to 1959)
7.DG.05

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
Dana 7th ed.:
20.1.1.1
20.1.1.1

20 : COMPOUND NITRATES
1 : Miscellaneous
13.9

13 : Nitrates

Physical Properties of DarapskiteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
2½ on Mohs scale
Cleavage:
Perfect
On {010}. Also perfect cleavage on {100} (may be a parting).

Optical Data of DarapskiteHide

Type:
Biaxial (-)
RI values:
nα = 1.388 nβ = 1.479 nγ = 1.486
2V:
Measured: 26° to 28°, Calculated: 28°
Max Birefringence:
δ = 0.098
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v rather strong

Chemical Properties of DarapskiteHide

Formula:
Na3(SO4)(NO3) · H2O

Crystallography of DarapskiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 10.57 Å, b = 6.91 Å, c = 5.18 Å
β = 102.77°
Ratio:
a:b:c = 1.53 : 1 : 0.75
Unit Cell V:
368.98 ų (Calculated from Unit Cell)
Morphology:
Crystals tabular {100}, and pseudo-tetragonal [100].
Twinning:
Common on {100}. Re-entrant angles on the edges and composition face {100}. Polysynthetic at times.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0012051DarapskiteSabelli C (1967) La struttura della darapskite Atti della Accademia Nazionale dei Lincei 42 874-88719670293
CIF Raw Data - click here to close

Geological EnvironmentHide

Geological Setting:
Nitrate deposits rich in sulfates.

Type Occurrence of DarapskiteHide

Other Language Names for DarapskiteHide

German:Darapskit
Simplified Chinese:钠硝矾
Spanish:Darapskita

Common AssociatesHide

AnhydriteCaSO4
BlöditeNa2Mg(SO4)2 · 4H2O
HaliteNaCl
NitratineNaNO3

Related Minerals - Nickel-Strunz GroupingHide

7.DG.MathesiusiteK5(UO2)4(SO4)4(VO5)·4H2OTet. 4/m : P4/n
7.DG.10Clinoungemachite(Na, K, Fe, SO4)Mon. 2/m
7.DG.10HumberstoniteNa7K3Mg2(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
7.DG.10UngemachiteK3Na8Fe(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
7.DG.15BentoriteCa6(Cr3+,Al)2(SO4)3(OH)12 · 26H2OTrig. 3m : P3 1c
7.DG.15CharlesiteCa6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2OTrig. 3m : P3 1c
7.DG.15EttringiteCa6Al2(SO4)3(OH)12 · 26H2OTrig. 3m : P3 1c
7.DG.15JouravskiteCa3Mn4+(SO4)(CO3)(OH)6 · 12H2OHex. 6 : P63
7.DG.15SturmaniteCa6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12 · 25H2OTrig. 3m : P3 1c
7.DG.15ThaumasiteCa3(SO4)[Si(OH)6](CO3) · 12H2OHex. 6 : P63
7.DG.15CarraraiteCa3(SO4)[Ge(OH)6](CO3) · 12H2OHex.
7.DG.15BuryatiteCa3(Si,Fe,Al)(SO4)[B(OH)4]O(OH)5 · 12H2OTrig. 3m : P3 1c
7.DG.20RapidcreekiteCa2(SO4)(CO3) · 4H2OOrth.
7.DG.20KorkinoiteCa4(SO4)2(CO3)2 · 9(H2O)Orth. mmm (2/m 2/m 2/m) : Pmmm
7.DG.25TatarskiteCa6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2OOrth.
7.DG.30NakauriiteCu8(SO4)4(CO3)(OH)6 · 48H2OOrth.
7.DG.35Chessexite(Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2OOrth.
7.DG.40CarlosruiziteK6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2OTrig. 3m (3 2/m) : P3c1
7.DG.40FuenzalidaiteK6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2OTrig. 3m (3 2/m) : P3c1
7.DG.45Chelyabinskite(Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?)Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

13.1NitratineNaNO3Trig. 3m (3 2/m) : R3c
13.2NiterKNO3Orth. mmm (2/m 2/m 2/m) : Pmma
13.3GerhardtiteCu2(NO3)(OH)3Orth. 2 2 2 : P21 21 21
13.4NitromagnesiteMg(NO3)2 · 6H2OMon. 2/m
13.5NitrocalciteCa(NO3)2 · 4H2OMon. 2/m
13.6NitrobariteBa(NO3)2Iso. m3 (2/m 3) : Pa3
13.7ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
13.8SveiteKAl7(NO3)4(OH)16Cl2 · 8H2OMon.
13.10HumberstoniteNa7K3Mg2(SO4)6(NO3)2 · 6H2OTrig. 3 : R3
13.11Mbobomkulite(Ni,Cu)Al4((NO3)2,SO4)(OH)12 · 3H2OMon.
13.12Hydrombobomkulite(Ni,Cu)Al4((NO3)2,SO4)(OH)12 · 13-14H2OMon.
13.13Nickelalumite(Ni,Cu)Al4(SO4,(NO3)2)(OH)12 · 3H2OMon.

Other InformationHide

Notes:
Readily soluble in 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 DarapskiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Dietze (1891) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 19: 445.
Osann (1894) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 23: 584.
Schulten (1896) Bulletin de la Société française de Minéralogie: 19: 161.
Semper and Michels (1904) Zs. Berg.-Hütt.-und Salinenwesen: 52: 359.
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 66.
Foote (1925) American Journal of Science: 9: 441 (artif. compound).
Wetzel (1928) Chemie der Erde, Jena: 3: 385, 411.
Hintze, Carl (1930) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: 1 [3B]: 4553.
Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 309-311.
American Mineralogist (1970): 55: 1500-1517.

Internet Links for DarapskiteHide

Localities for DarapskiteHide

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.
Antarctica
 
  • Eastern Antarctica
    • Queen Maud Land
Ericksen & Mrose (1970) American Mineralogist 55:1500-1517
    • Victoria Land
      • McMurdo Dry Valleys
        • Taylor Valley
Hodenberg, R.V., Miotke, F.-D. (1983): Some special salt crystal formations in South-Victoria-Land, Antarctica, and first results of the investigation of a new mineral, a Na-Ca double sulfate. Kali u. Steinsalz, Bd. 8: 11: 374-383 (in German); in: Dunn, P.J., Gobel, V., Grice, J.D., Puziewicz, J., Shigley, J.E., Vanko, D.A., Zilczer, J. (1985): New mineral names. American Mineralogist: 70: 439
      • Olympus Range
Hodenberg, R.V., Miotke, F.-D. (1983): Some special salt crystal formations in South-Victoria-Land, Antarctica, and first results of the investigation of a new mineral, a Na-Ca double sulfate. Kali u. Steinsalz, Bd. 8: 11: 374-383 (in German); in: Dunn, P.J., Gobel, V., Grice, J.D., Puziewicz, J., Shigley, J.E., Vanko, D.A., Zilczer, J. (1985): New mineral names. American Mineralogist: 70: 439
Bahamas
 
  • San Salvador District
    • San Salvador Island
Onac B.P., Sumrall J., Mylroie J.E., Kearns J. (2009): Cave minerals of San Salvador Island, Bahamas. The University of South Florida karst studies series, 1, 70 pp.
Chile
 
  • Antofagasta
    • Antofagasta Province
      • Canchas
American Mineralogist: 79: 1003-1008.; Ericksen & Mrose (1970) American Mineralogist 55:1500-1517
      • Santa Catalina
Ericksen & Mrose (1970) American Mineralogist 55:1500-1517
      • Taltal
Natural History Museum Vienna collection
        • Oficina Lautaro
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: 310; American Mineralogist (1970): 55: 1500.
    • El Loa Province
      • Calama
        • Chuquicamata District
Jarrell, O.W. (1939) Marshite and other minerals from Chuquicamata, Chile. American Mineralogist: 24(10): 629-635.; 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: 310.; Ericksen, G.E., Mrose, M.E. (1970) Mineralogical studies of the nitrate deposits of Chile. II. Darapskite, Na3(NO3)(SO4)·H2O. American Mineralogist: 55: 1500-1517.
      • San Pedro de Atacama
        • Cordillera de la Sal
De Waele, J., Carbone, C., Sanna, L., Vattano, M., Galli, E., & Forti, P. (2017). Secondary minerals from halite caves in the Atacama Desert (Chile). In 17th International Congress of Speleology (No. I, pp. 242-246). Australian Speleological Federation Inc.
    • Tocopilla Province
      • María Elena
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: 310.
Collao, S., Arce, E., & Andía, A. (2002). Mineralogia, Quimica E Inclusiones Fluidas En Los Depositos DE Nitratos DE Maria Elena, IIa. Region, Chile. Boletín de la Sociedad Chilena de Química, 47(2), 181-190.
        • Pedro de Valdivia
Pueyo, J. J., Chong, G. & Vega, M. (1998): Mineralogy and parental brine evolution in the Pedro de Valdivia nitrate deposit, Antofagasta, Chile. Revista Geologica de Chile 25, 3-15. (in Spanish) ; Marta, V. E. G. A., & Pueyo, J. (1996) Parental Brine Evolution in the Chilean Nitrate Deposits (Pedro de Valdivia, II Region de Antofagasta). Mineralogical and Petrographic Data. Third ISAG, S1 Malo (France), 17-19/9/1996
      • Tocopilla
samples analysed by Gerhard Mohn and Joy Desor
  • Tarapacá
    • Iquique Province
      • Chanabaya
Gunnar Färber specimens
      • Iquique
American Mineralogist: 79: 1003-1008.
    • Tamarugal Province
      • Huara
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: 310.
      • Oficina Victoria
Am. Min.1989, V74, 1207-1214.
China
 
  • Xinjiang
    • Bayin'gholin Autonomous Prefecture (Bayingolin Autonomous Prefecture; Bayinguoleng Autonomous Prefecture)
      • Ruoqiang Co. (Qakilik Co.; Chaqiliq Co.)
Yanling Tang (2005): Non-metallic deposits of Xinjiang, China [Zhongguo Xinjiang Fei Jinshu Kuangchuang]. Geological Publishing House (Beijing), 289 pp.
Bingxiao Li (1992): Journal of Lake Sciences 4(1), 48-55; Keqin Cai, Jianhua Gao, Dejun Zhao, and Youku Yu (1992): Acta Mineralogica Sinica 12(2), 143-151
    • Tulufan Prefecture (Turfan Prefecture; Turpan Prefecture)
      • Gaochang District
        • Turfan basin (Turpan basin)
Bingxiao Li (1992): Journal of Lake Sciences 4(1), 48-55
Yanling Tang (2005): Non-metallic deposits of Xinjiang, China [Zhongguo Xinjiang Fei Jinshu Kuangchuang]. Geological Publishing House (Beijing), 289 pp.
      • Shanshan Co. (Piqan Co.; Pichan Co.)
        • Kumtag basin
Wensheng Ge (2008): Presented at the 33rd International Geological Congress, Oslo (Norway), August 6-14, 2008.; Yuezhen Gao (1993): Geology of Chemical Minerals 15(1)
Romania
 
  • Hunedoara
    • Cerna valley
Onac, B. P. (2009): ACTA CARSOLOGICA 38/1, 27-39
USA
 
  • Arizona
    • Cochise County
      • Bowie area
http://www.excaliburmineral.com/mind-j.htm
    • Greenlee Co.
      • Peloncillo Mountains
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199.
  • California
    • Inyo Co.
      • Amargosa Range
Ericksen & Mrose (1970) American Mineralogist 55:1500-1517
Ericksen, G. E., Hosterman, J. W., & Amand, P. S. (1988). Chemistry, mineralogy and origin of the clay-hill nitrate deposits, Amargosa River valley, Death Valley region, California, USA. Chemical geology, 67(1-2), 85-102.
Bailey, Gilbert E. (1902), The saline deposits of California: California Mining Bureau Bulletin 24: 170; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 166; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 342.
    • San Bernardino Co.
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: 310.; Ericksen & Mrose (1970) American Mineralogist 55:1500-1517
  • New Mexico
NSS Bulletin 43:127-132
  • Texas
    • Brewster Co.
      • Big Bend National Park
Rocks & Minerals: 66(3): 196-224.; Mineralogical Magazine 1977 41 : 548-550.; Hill, C. A., & Ewing, R. C. (1977). Darapskite, Na 3 (NO 3)(SO 4). H 2 O, a new occurrence, in Texas. Mineralogical Magazine, 41(320), 548-550.
 
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