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Sasaite

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About SasaiteHide

08256740015704859289155.jpg
South African Speleological Association
Formula:
(Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2O
Colour:
Colourless to white
Lustre:
Earthy
Crystal System:
Orthorhombic
Name:
Named for SASA, the acronym for the South African Speleological Association. Their members first explored the West Driefontein Cave and discovered the mineral.
Water content varies with humidity.


Classification of SasaiteHide

Approved
Approval Year:
1977
First Published:
1978
8.DB.55

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
43.5.4.1

43 : COMPOUND PHOSPHATES, ETC.
5 : Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
22.3.21

22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates

Physical Properties of SasaiteHide

Earthy
Transparency:
Transparent, Translucent
Colour:
Colourless to white
Streak:
White
Cleavage:
Perfect
{001}

Optical Data of SasaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.465 nβ = 1.473 nγ = 1.477
2V:
Measured: 15° , Calculated: 70°
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong

Chemical Properties of SasaiteHide

Formula:
(Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2O
IMA Formula:
Al6(PO4)5(OH)3 · 36H2O

Crystallography of SasaiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 21.5 Å, b = 30.04 Å, c = 92.06 Å
Ratio:
a:b:c = 0.716 : 1 : 3.065
Unit Cell V:
59,457.87 ų (Calculated from Unit Cell)
Comment:
Originally given cell: a = 10.75, b = 15.02, c = 46.03 A, with Z=6.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.52 Å(100)
7.51 Å(22)
6.99 Å(23)
6.30 Å(21)
4.214 Å(18)
3.262 Å(18)
2.901 Å(42)
Comments:
Fully hydrated material.

Type Occurrence of SasaiteHide

General Appearance of Type Material:
Soft white chalky nodules, up to 2 cm in diameter, and as efflorescence
Place of Conservation of Type Material:
Museum of the Geological Survey, Pretoria, South Africa
Reference:
Martini, J. (1978) Sasaite, a new phosphate mineral from West Driefontein Cave, Transvaal, South Africa. Mineralogical Magazine: 42: 401–404.

Synonyms of SasaiteHide

Other Language Names for SasaiteHide

German:Sasait
Simplified Chinese:多水硫磷铝石
Spanish:Sasaita

Related Minerals - Nickel-Strunz GroupingHide

8.DB.ArangasiteAl2F(PO4)(SO4) · 9H2O Mon. 2/m : P2/b
8.DB.05DiadochiteFe3+2(PO4)(SO4)(OH) · 5H2OAmor.
8.DB.05Pitticite(Fe, AsO4, H2O) (?)Amor.
8.DB.05DestineziteFe3+2(PO4)(SO4)(OH) · 6H2OTric. 1 : P1
8.DB.10VashegyiteAl11(PO4)9(OH)6 · 38H2OOrth. mmm (2/m 2/m 2/m)
8.DB.15SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.20SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric.
8.DB.25MitryaevaiteAl6(PO4)((P,S)O3(OH,O))2F2(OH)2 · 14.5H2OTric.
8.DB.30SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
8.DB.35SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b
8.DB.40BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2OTric. 1 : P1
8.DB.45ZýkaiteFe3+4(AsO4)3(SO4)(OH) · 15H2OOrth. 2 2 2 : P2 2 2
8.DB.50GiniiteFe2+Fe3+4(PO4)3(OH)5 · 2H2OMon. 2/m : P2/b
8.DB.60McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2OTric.
8.DB.65GoldquarryiteCuCd2Al3(PO4)4F2(H2O,F)2 · 10H2OTric. 1 : P1
8.DB.70BirchiteCd2Cu2(PO4)2(SO4) · 5H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.DB.75BraithwaiteiteNaCu5(Ti4+Sb5+)(AsO4)4(HAsO4)2O2 · 8H2OTric. 1 : P1

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

22.3.1ParnauiteCu9(AsO4)2(SO4)(OH)10 · 7H2OOrth. mm2 : Pmn21
22.3.2ArdealiteCa2(HPO4)(SO4) · 4H2OMon. m : Bb
22.3.3Machatschkiite(Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2OHex.
22.3.4ClinotyroliteCa2Cu9(AsO4,SO4)4(OH,O)10 · 10H2OMon.
22.3.5PeisleyiteNa2Al9[(P,S)O4]8(OH)6•28H2OTric. 1 : P1
22.3.6ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2OTrig. 3 : R3
22.3.7WoodhouseiteCaAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
22.3.8Schlossmacherite(H3O)Al3(SO4)2(OH)6Trig.
22.3.9SvanbergiteSrAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
22.3.10KemmlitziteSrAl3(AsO4)(SO4)(OH)6Trig.
22.3.11SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
22.3.12KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
22.3.13HotsoniteAl11(SO4)3(PO4)2(OH)21 · 16H2OTric.
22.3.14WeileriteBaAl3(AsO4)(SO4)(OH)6Hex.
22.3.15TsumebitePb2Cu(PO4)(SO4)(OH)Mon. 2/m : P21/m
22.3.16ArsentsumebitePb2Cu(AsO4)(SO4)(OH)Mon. 2/m : P21/m
22.3.17HinsdalitePbAl3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
22.3.18HidalgoitePbAl3(AsO4)(SO4)(OH)6Trig.
22.3.19OrpheitePbAl3(PO4)(SO4)(OH)6Trig.
22.3.20CoconinoiteFe3+2Al2(UO2)2(PO4)4(SO4)(OH)2 · 20H2OMon.
22.3.22Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2OHex.
22.3.23CorkitePbFe3(PO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
22.3.24BeudantitePbFe3(AsO4)(SO4)(OH)6Trig. 3m (3 2/m) : R3m
22.3.25DiadochiteFe3+2(PO4)(SO4)(OH) · 5H2OAmor.
22.3.26SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b
22.3.27BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2OTric. 1 : P1
22.3.28ZýkaiteFe3+4(AsO4)3(SO4)(OH) · 15H2OOrth. 2 2 2 : P2 2 2
22.3.29TooeleiteFe3+6(As3+O3)4(SO4)(OH)4 · 4H2OMon. 2/m : B2/m
22.3.30Pitticite(Fe, AsO4, H2O) (?)Amor.
22.3.31Xiangjiangite(Fe3+,Al)(UO2)4(PO4)2(SO4)2(OH) · 22H2OTet.

Other InformationHide

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 SasaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Martini, J. (1978) Sasaite, a new phosphate mineral from West Driefontein Cave, Transvaal, South Africa. Mineralogical Magazine: 42: 401–404.
Fleischer, M., Chao, G.Y., Pabst, A. (1979) New mineral names. American Mineralogist: 64: 464-467.
Zohan, Z., Slansky, E., Povondra, P. (1983) Vashegyite, a sheet aluminum phosphate; new data. The Canadian Mineralogist: 21(3): 489-498.

Internet Links for SasaiteHide

Localities for SasaiteHide

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.
Australia
 
  • Victoria
    • Corangamite Shire
      • Skipton
        • Mt. Widderin (Anderson's Hill)
Birch, W.D. & D.A. Henry, eds. (1993): Phosphate Minerals of Victoria. The Mineralogical Society of Victoria - Special publication No.3 (192p): 123-144.
    • Rural City of Wangaratta
      • Whitfield
W. D. Birch and D. A. Henry in Phosphate Minerals of Victoria, p.83-90.
Austria
 
  • Styria
    • Bruck-Mürzzuschlag District
      • Breitenau am Hochlantsch
        • Hochlantsch
Landesmuseum Joanneum (Graz, Styria) collection; Postl, W. (1990)
Canada
 
  • Yukon
    • Dawson mining district
MinRec 23:4-47
[MinRec Vol 23:Yukon 38]
China
 
  • Guizhou
    • Zunyi
      • Bozhou District
        • Zunyi Ni-Mo-PGE-Au ore field
Taiyi Luo, Xiaobiao Li, Linbo Yao, and Dan Zhu (2003): Acta Mineralogica Sinica 23(3), 205-210
Germany
 
  • Thuringia
    • Saalfeld-Rudolstadt District
      • Saalfeld
        • Garnsdorf
RÜGER, F.; SENF, L. & WITZKE, T. (1995): Die Saalfelder Feengrotten: Seltene Sekundärmineralien aus Thüringen. Lapis 20(1), 15-26. Ullrich, B. (2018). Zur Mineralogie anthropogen induzierter Alterationsprozesse – Sekundärminerale des historischen Alaunschieferbergbaus von Saalfeld und Schmiedefeld im Thüringischen Schiefergebirge. Geologica Saxonica 64, 67-79. [http://www.senckenberg.de/files/content/forschung/publikationen/geologicasaxonica/64/04_geologica-saxonica_64_ullrich.pdf]
South Africa
 
  • Gauteng
    • West Rand District (West Rand)
      • Far West Rand (West Wits Line)
        • Oberholzer
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa, pg 240;
        • Western Sector
          • Carletonville
Mineralogical Magazine(1978) 42, 401-404
Martini, J.E.J., (1978) Sasaite, a new phosphate mineral from West Driefontein Cave, Transvaal, South Africa. Mineralogical Magazine, 42, 401-404; Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa, pg 240
  • Mpumalanga
    • Ehlanzeni District
      • Mbombela (Nelspruit)
Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)
USA
 
  • Virginia
    • Bath Co.
NSS Bulletin 44:90-97 (1982)
 
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