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Cesanite

Formula:
Na
 
3
Ca
 
2
[OH|(SO
 
4
)
 
3
]
System:Hexagonal
Name:After the type locality, the Cesano No. 1 well, Cesano geothermal field, Bracciano Lake, Rome Province, Latium, Italy.
This page provides mineralogical data about Cesanite.

Classification of Cesanite

IMA status:Approved
Strunz 8th edition ID:6/B.12-50
Nickel-Strunz 10th (pending) edition ID:7.BD.20

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
Dana 8th edition ID:30.3.3.1

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)5(XO4)3Zq
Hey's CIM Ref.:25.4.5

25 : Sulphates
4 : Sulphates of Ca, Sr and Ba
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Type Occurrence of Cesanite

Type Locality:Cesano No. 1 well, Cesano geothermal field, Bracciano Lake, Rome Province, Latium, Italy
Year of Discovery:1981

Crystallography of Cesanite

Crystal System:Hexagonal
Cell Parameters:a = 9.44Å, c = 6.9Å
Ratio:a:c = 1 : 0.731
Unit Cell Volume:V 532.51 ų (Calculated from Unit Cell)

Optical Data of Cesanite

Type:Uniaxial (-)
RI values: nω = 1.570 nε = 1.564
Maximum Birefringence:δ = 0.006

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low

Chemical Properties of Cesanite

Formula:
Na
 
3
Ca
 
2
[OH|(SO
 
4
)
 
3
]
Essential elements:Ca, H, Na, O, S
All elements listed in formula:Ca, H, Na, O, S

Relationship of Cesanite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.BD.05Sulphohalite
Na
 
6
[F|Cl|(SO
 
4
)
 
2
]
7.BD.05Sulfohalite
7.BD.10Galeite
Na
 
15
[F
 
4
|Cl|(SO
 
4
)
 
5
]
7.BD.10Schairerite
Na
 
3
[(F,Cl)|SO
 
4
]
7.BD.15Kogarkoite
Na
 
3
[F|SO
 
4
]
7.BD.20Caracolite
Na
 
3
Pb
 
2
[Cl|(SO
 
4
)
 
3
]
7.BD.25Burkeite
Na
 
6
CO
 
3
(SO
 
4
)
 
2
7.BD.30Hanksite
Na
 
22
K(SO
 
4
)
 
9
(CO
 
3
)
 
2
Cl
7.BD.35Cannonite
Bi
 
2
[O|(OH)
 
2
|SO
 
4
]
7.BD.40Lanarkite
Pb
 
2
[O|SO
 
4
]
7.BD.45Grandreefite
Pb
 
2
SO
 
4
F
 
2
7.BD.50Itoite
Pb
 
3
Ge
4+
 
[O|OH|SO
 
4
]
 
2
7.BD.55Chiluite
Bi
 
6
Mo
 
2
Te
 
2
O
 
21
7.BD.60Hectorfloresite
Na
 
9
[IO
 
3
|(SO
 
4
)
 
4
]
7.BD.65Pseudograndreefite
Pb
 
6
SO
 
4
F
 
10
7.BD.70Sundiusite
Pb
 
10
[O
 
8
|SO
 
4
|Cl
 
2
]
Related Minerals - Hey's Index Grouping:

- +
25.4.1Anhydrite
CaSO
 
4
25.4.2Bassanite
Ca[SO
 
4
] · 0.5H
 
2
O
25.4.3Gypsum
Ca[SO
 
4
] · 2H
 
2
O
25.4.4Glauberite
Na
 
2
Ca(SO
 
4
)
 
2
25.4.6Eugsterite
Na
 
4
Ca(SO
 
4
)
 
3
·2H
 
2
O
25.4.7Hydroglauberite
Na
 
10
Ca
 
3
(SO
 
4
)
 
8
·6H
 
2
O
25.4.8Syngenite
K
 
2
Ca(SO
 
4
)
 
2
·H
 
2
O
25.4.9Görgeyite
K
 
2
Ca
 
5
(SO
 
4
)
 
6
·H
 
2
O
25.4.10Polyhalite
K
 
2
Ca
 
2
Mg(SO
 
4
)
 
4
·2H
 
2
O
25.4.11Koktaite
(NH
 
4
)
 
2
Ca(SO
 
4
)
 
2
·H
 
2
O
25.4.12Ye'elimite
Ca
 
4
Al
 
6
[O
 
12
|SO
 
4
]
25.4.13Ettringite
Ca
 
6
Al
 
2
[(OH)
 
4
|SO
 
4
]
 
3
 · 26H
 
2
O
25.4.14Bentorite
Ca
 
6
(Cr
3+
 
,Al)
 
2
[(OH)
 
4
|SO
 
4
]
 
3
 · 26H
 
2
O
25.4.15Celestine
SrSO
 
4
25.4.16Kalistrontite
K
 
2
Sr(SO
 
4
)
 
2
25.4.17Baryte
BaSO
 
4

Other Names for Cesanite

Synonyms:
IMA1980-023
Other Languages:
German:Cesanit
Russian:Чезанит
Spanish:Cesanita

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 Cesanite

Reference List:Cavarretta, G., Mottana, A. & Tecce, F. (1981): Cesanite, Ca2Na3[(OH)(SO4)3], a sulfate isotypic to apatite, from the Cesano geothermal field (Latium, Italy): Mineralogical Magazine: 44, 269-273.

Mineralogical Magazine: 47: 59-63.

American Mineralogist: 67: 621.

Internet Links for Cesanite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Cesanite details from Handbook of Mineralogy (PDF)
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    Localities for Cesanite

    (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.
    Bahamas
     
    • San Salvador District
      • San Salvador Island
    		Carb.&Evap. v.16 no.1 (2001)
    Italy
     
    • Latium
      • Rome Province
        • Bracciano Lake
          • Cesano geothermal field
    		Mineralogical Magazine 1981 44 : 269-273.
    Mineral and/or Locality
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