Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Sanjuanite

Big Photo

Sierra Chica de Zonda, Pocito Department, San Juan, Argentina
© 2007, JGW

Formula:
Al
 
2
[OH|SO
 
4
|PO
 
4
] · 9H
 
2
O
Colour:WhiteHardness:3
Name:Named after its discovery locality.


Sanjuanite-Destinezite Group

Classification of Sanjuanite

IMA status:Approved 1966
Strunz 8th edition ID:7/D.12-30
Nickel-Strunz 10th (pending) edition ID:8.DB.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1
Dana 8th edition ID:43.5.1.3

43 : COMPOUND PHOSPHATES, ETC.
5 : Hydrated Compound Phosphates, etc·, Containing Hydroxyl or Halogen
Hey's CIM Ref.:22.3.11

22 : Phosphates, Arsenates or Vanadates with other Anions
3 : Phosphates, arsenates or vanadates with sulphates
mindat.org URL:http://www.mindat.org/min-3522.html
Please feel free to link to this page.

Type Occurrence of Sanjuanite

Type Locality:Sierra Chica de Zonda, Pocito Department, San Juan, Argentina
Year of Discovery:1968

Physical Properties of Sanjuanite

Lustre:Silky, Dull
Colour:White
Hardness (Mohs):3

Optical Data of Sanjuanite

Type:Biaxial
RI values: nα = 1.484 nγ = 1.499
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v to r < v strong

Chemical Properties of Sanjuanite

Formula:
Al
 
2
[OH|SO
 
4
|PO
 
4
] · 9H
 
2
O
Essential elements:Al, H, O, P, S
All elements listed in formula:Al, H, O, P, S

Relationship of Sanjuanite to other Species

Member of Group:
Sanjuanite-Destinezite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
8.DB.05Diadochite
Fe
3+
2
(PO
 
4
)(SO
 
4
)(OH)·5H
 
2
O
8.DB.05Pitticite
[Fe, SO
 
4
, AsO
 
4
, H
 
2
O] ?
8.DB.05Destinezite
Fe
3+
2
[OH|SO
 
4
|PO
 
4
]·6H
 
2
O
8.DB.10Vashegyite
Al
 
11
[(OH)
 
6
|(PO
 
4
)
 
9
] · 38H
 
2
O
8.DB.15Schoonerite
ZnMn
2+
 
Fe
2+
2
Fe
3+
 
(PO
 
4
)
 
3
(OH)
 
2
 · 9H
 
2
O
8.DB.20Sinkankasite
H
 
2
Mn
2+
 
Al[OH|(PO
 
4
)
 
2
] · 6H
 
2
O
8.DB.25Mitryaevaite
Al
 
6
(PO
 
4
)[(P,S)O
 
3
(OH,O)]
 
2
F
 
2
(OH)
 
2
(H
 
2
O)
 
8
· 6.5H
 
2
O
8.DB.35Sarmientite
Fe
3+
2
[OH|SO
 
4
|AsO
 
4
] · 5H
 
2
O
8.DB.40Bukovskýite
Fe
3+
2
[OH|SO
 
4
|AsO
 
4
] · 7H
 
2
O
8.DB.45Zýkaite
Fe
3+
4
[OH|SO
 
4
|(AsO
 
4
)
 
3
] · 15H
 
2
O
8.DB.50Giniite
Fe
2+
 
Fe
3+
4
[(OH)
 
5
|(PO
 
4
)
 
3
] · 2H
 
2
O
8.DB.55Sasaite
(Al,Fe
3+
 
)
 
14
[(OH)
 
7
|SO
 
4
|(PO
 
4
)
 
11
] · 83H
 
2
O
8.DB.60Mcauslanite
HFe
2+
3
Al
 
2
[F|(PO
 
4
)
 
4
] · 18H
 
2
O
8.DB.65Goldquarryite
CuCd
 
2
Al
 
3
(PO
 
4
)
 
4
F
 
2
(H
 
2
O)
 
10
(H
 
2
O,F)
 
2
8.DB.70Birchite
Cd
 
2
Cu
 
2
(PO
 
4
)
 
2
(SO
 
4
)·5H
 
2
O
8.DB.75Braithwaiteite
NaCu
 
5
(TiSb)
 
2
O
 
2
(AsO
 
4
)[AsO
 
3
(OH)]
 
2
 ·8H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
22.3.1Parnauite
Cu
 
9
[(OH)
 
10
|SO
 
4
|(AsO
 
4
)
 
2
] · 7H
 
2
O
22.3.2Ardealite
Ca
 
2
[HPO
 
4
|SO
 
4
] · 4H
 
2
O
22.3.3Machatschkiite
(Ca,Na)
 
6
AsO
 
4
(AsO
 
3
OH)
 
3
(PO
 
4
,SO
 
4
)·15H
 
2
O
22.3.4Clinotyrolite
Ca
 
2
Cu
 
9
[(OH,O)
 
10
|(AsO
 
4
,SO
 
4
)
 
4
] · 10H
 
2
O
22.3.5Peisleyite
Na
 
3
Al
 
16
[SO
 
4
|(PO
 
4
)
 
5
]
 
2
 · 20H
 
2
O
22.3.6Chalcophyllite
Cu
 
18
Al
 
2
[(OH)
 
9
|SO
 
4
|AsO
 
4
]
 
3
 · 33H
 
2
O
22.3.7Woodhouseite
CaAl
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
22.3.8Schlossmacherite
(H
 
3
O,Ca)Al
 
3
[(OH)
 
6
|(SO
 
4
,AsO
 
4
)
 
2
]
22.3.9Svanbergite
SrAl
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
22.3.10Kemmlitzite
(Sr,Ce)Al
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
22.3.12Kribergite
Al
 
5
[(OH)
 
4
|SO
 
4
|(PO
 
4
)
 
3
] · 4H
 
2
O
22.3.13Hotsonite
Al
 
11
[(OH)
 
21
|(SO
 
4
)
 
3
|(PO
 
4
)
 
2
] · 16H
 
2
O
22.3.14Weilerite
22.3.15Tsumebite
Pb
 
2
Cu[OH|SO
 
4
|PO
 
4
]
22.3.16Arsentsumebite
Pb
 
2
Cu[OH|SO
 
4
|AsO
 
4
]
22.3.17Hinsdalite
PbAl
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
22.3.18Hidalgoite
PbAl
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
22.3.19Orpheite
PbAl
 
3
[(OH)
 
6
|(PO
 
4
,SO
 
4
)
 
2
] (?)
22.3.20Coconinoite
Fe
3+
2
Al
 
2
(UO
 
2
)
 
2
[(OH)
 
2
|SO
 
4
|(PO
 
4
)
 
4
] · 20H
 
2
O
22.3.21Sasaite
(Al,Fe
3+
 
)
 
14
[(OH)
 
7
|SO
 
4
|(PO
 
4
)
 
11
] · 83H
 
2
O
22.3.22Tristramite
(Ca,U,Fe)(PO
 
4
,SO
 
4
)·2H
 
2
O
22.3.23Corkite
PbFe
 
3
[(OH)
 
6
|SO
 
4
|PO
 
4
]
22.3.24Beudantite
PbFe
 
3
[(OH)
 
6
|SO
 
4
|AsO
 
4
]
22.3.25Diadochite
Fe
3+
2
(PO
 
4
)(SO
 
4
)(OH)·5H
 
2
O
22.3.26Sarmientite
Fe
3+
2
[OH|SO
 
4
|AsO
 
4
] · 5H
 
2
O
22.3.27Bukovskýite
Fe
3+
2
[OH|SO
 
4
|AsO
 
4
] · 7H
 
2
O
22.3.28Zýkaite
Fe
3+
4
[OH|SO
 
4
|(AsO
 
4
)
 
3
] · 15H
 
2
O
22.3.29Tooeleite
Fe
3+
6
(AsO
 
3
)
 
4
(SO
 
4
)(OH)
 
4
· 4H
 
2
O
22.3.30Pitticite
[Fe, SO
 
4
, AsO
 
4
, H
 
2
O] ?
22.3.31Xiangjiangite
(Fe
3+
 
,Al)(UO
 
2
)
 
4
[OH|(SO
 
4
)
 
2
|(PO
 
4
)
 
2
] · 22H
 
2
O

Other Names for Sanjuanite

Synonyms:
IMA1966-043
Other Languages:
German:Sanjuanit
Spanish:Sanjuanita

Other Information

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 Sanjuanite

Reference List:American Mineralogist (1968): 53: 1-8.

Mineralogical Magazine (1989): 53: 385.

Internet Links for Sanjuanite

Search Engines:
  • Look for Sanjuanite on Google
  • Look for Sanjuanite images on Google
    • External Links:
  • Look for Sanjuanite on Webmineral
  • Look for Sanjuanite on Athena Mineralogy
  • Look for Sanjuanite on Wikipedia
  • Look for Sanjuanite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Sanjuanite in the Natural History Museum (London) online catalogue
  • Sanjuanite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • SpiriferMinerals.com - high quality specimens
  • Find Sanjuanite on www.crystalclassics.co.uk
  • Edwards Minerals - Fine Specimens
  • Buy RARE Minerals from Rocks of Africa
  • The Arkenstone - Fine Minerals
  • rare and unusual minerals mainly crystallized
  • Fine Minerals from Dan Weinrich Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Buy minerals from Mineralium.com
  • Fabre Minerals - search for Sanjuanite specimens
  • Wilensky Fine Minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Sanjuanite

    (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
     
    • San Juan
      • Pocito Department
    		MM 53 (1989), 385; HB4 (2000)
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 17th Nov 2009 08:54:24