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Cesanite

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Formula:
Na3Ca2(SO4)3(OH)
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

Approved
7.BD.20

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

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)5(XO4)3Zq
25.4.5

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

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
Max Birefringence:
δ = 0.006
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of Cesanite

Formula:
Na3Ca2(SO4)3(OH)
Essential elements:
All elements listed in formula:

Relationship of Cesanite to other Species

Other Members of Group:
AiolositeNa4Bi(SO4)3Cl
CaracoliteNa3Pb2(SO4)3Cl
FluorphosphohedyphaneCa2Pb3(PO4)3F
HedyphanePb3Ca2(AsO4)3Cl
MorelanditeCa2Ba3(AsO4)3Cl
PhosphohedyphaneCa2Pb3(PO4)3Cl
7.BD.05SulphohaliteNa6(SO4)2FCl
7.BD.05Sulfohalite
7.BD.10GaleiteNa15(SO4)5F4Cl
7.BD.10SchaireriteNa3(SO4)(F,Cl)
7.BD.15KogarkoiteNa3(SO4)F
7.BD.20CaracoliteNa3Pb2(SO4)3Cl
7.BD.20AiolositeNa4Bi(SO4)3Cl
7.BD.25BurkeiteNa6(CO3)(SO4)2
7.BD.30HanksiteNa22K(SO4)9(CO3)2Cl
7.BD.35CannoniteBi2(SO4)O(OH)2
7.BD.40LanarkitePb2(SO4)O
7.BD.45GrandreefitePb2(SO4)F2
7.BD.50ItoitePb3Ge4+(SO4)2O2(OH)2
7.BD.55ChiluiteBi3Te6+Mo6+O10.5
7.BD.60HectorfloresiteNa9(SO4)4(IO3)
7.BD.65PseudograndreefitePb6(SO4)F10
7.BD.70SundiusitePb10(SO4)O8Cl2
25.4.1AnhydriteCaSO4
25.4.2BassaniteCaSO4 · 0.5H2O
25.4.3GypsumCaSO4 · 2H2O
25.4.4GlauberiteNa2Ca(SO4)2
25.4.6EugsteriteNa4Ca(SO4)3 · 2H2O
25.4.7HydroglauberiteNa10Ca3(SO4)8 · 6H2O
25.4.8SyngeniteK2Ca(SO4)2 · H2O
25.4.9GörgeyiteK2Ca5(SO4)6 · H2O
25.4.10PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
25.4.11Koktaite(NH4)2Ca(SO4)2 · H2O
25.4.12Ye'elimiteCa4Al6(SO4)O12
25.4.13EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
25.4.14BentoriteCa6(Cr3+,Al)2(SO4)3(OH)12 · 26H2O
25.4.15CelestineSrSO4
25.4.16KalistrontiteK2Sr(SO4)2
25.4.17BaryteBaSO4

Other Names for Cesanite

Name in Other Languages:
German:Cesanit
Spanish:Cesanita

Other Information

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 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

Localities for Cesanite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • Latium
    • Rome Province
      • Bracciano Lake
        • Cesano geothermal field
Mineralogical Magazine 1981 44 : 269-273.
Mineral and/or Locality  
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