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Jouravskite

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Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco

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Formula:
Ca
 
6
Mn
3+
2
(SO
 
4
,CO
 
3
)
 
3
(OH)
 
12
 · 26H
 
2
O
System:HexagonalHardness:2½
Member of:Ettringite Group
Name:In honour of Georges Jouravsky (1896–1964), Chief Geologist, Geological Survey of Morocco, for his work on the mineral deposits of Morocco.


Ettringite Group.

Classification of Jouravskite

IMA status:Approved 1965
Strunz 8th edition ID:6/D.13-30
Nickel-Strunz 10th (pending) edition ID:7.DG.15

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 8th edition ID:32.4.4.3

32 : COMPOUND SULFATES
4 : Hydrated Compound Sulfates containing Hydroxyl or Halogen
Hey's CIM Ref.:12.2.17

12 : Carbonates with other anions
2 : Carbonates with sulphate
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Type Occurrence of Jouravskite

Type Locality:Tachgagalt Mine, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
Year of Discovery:1965

Physical Properties of Jouravskite

Hardness (Mohs):2½

Crystallography of Jouravskite

Crystal System:Hexagonal
Cell Parameters:a = 11.06Å, c = 10.5Å
Ratio:a:c = 1 : 0.949
Unit Cell Volume:V 1,112.32 ų (Calculated from Unit Cell)

Optical Data of Jouravskite

Type:Uniaxial (-)
RI values: nω = 1.556 nε = 1.540
Maximum Birefringence:δ = 0.016

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

Chemical Properties of Jouravskite

Formula:
Ca
 
6
Mn
3+
2
(SO
 
4
,CO
 
3
)
 
3
(OH)
 
12
 · 26H
 
2
O
Essential elements:Ca, H, Mn, O, S
All elements listed in formula:C, Ca, H, Mn, O, S

Relationship of Jouravskite to other Species

Member of:Ettringite Group
Other Members of Group:

- +
Bentorite
Ca
 
6
(Cr
3+
 
,Al)
 
2
(SO
 
4
)
 
3
(OH)
 
12
 · 26H
 
2
O
Buryatite
Ca
 
3
(Si,Fe,Al)(SO
 
4
)[B(OH)
 
4
]O(OH)
 
5
 · 12H
 
2
O
Carraraite
Ca
 
3
(SO
 
4
)[Ge(OH)
 
6
](CO
 
3
) · 12H
 
2
O
Charlesite
Ca
 
6
(Al,Si)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH,O)
 
12
 · 26H
 
2
O
Ettringite
Ca
 
6
Al
 
2
(SO
 
4
)
 
3
(OH)
 
12
 · 26H
 
2
O
Micheelsenite
(Ca,Y)
 
3
Al(HPO
 
4
,CO
 
3
)(CO
 
3
)(OH)
 
6
 · 12H
 
2
O
Sturmanite
Ca
 
6
(Fe
3+
 
,Al,Mn
3+
 
)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH)
 
12
 · 25H
 
2
O
Thaumasite
Ca
 
3
(SO
 
4
)[Si(OH)
 
6
](CO
 
3
) · 12H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
7.DG.05Darapskite
Na
 
3
(SO
 
4
)(NO
 
3
) · H
 
2
O
7.DG.10Clinoungemachite
(Na, K, Fe, SO
 
4
)
7.DG.10Humberstonite
Na
 
7
K
 
3
Mg
 
2
(SO
 
4
)
 
6
(NO
 
3
)
 
2
 · 6H
 
2
O
7.DG.10Ungemachite
K
 
3
Na
 
8
Fe(SO
 
4
)
 
6
(NO
 
3
)
 
2
 · 6H
 
2
O
7.DG.15Bentorite
Ca
 
6
(Cr
3+
 
,Al)
 
2
(SO
 
4
)
 
3
(OH)
 
12
 · 26H
 
2
O
7.DG.15Charlesite
Ca
 
6
(Al,Si)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH,O)
 
12
 · 26H
 
2
O
7.DG.15Ettringite
Ca
 
6
Al
 
2
(SO
 
4
)
 
3
(OH)
 
12
 · 26H
 
2
O
7.DG.15Sturmanite
Ca
 
6
(Fe
3+
 
,Al,Mn
3+
 
)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH)
 
12
 · 25H
 
2
O
7.DG.15Thaumasite
Ca
 
3
(SO
 
4
)[Si(OH)
 
6
](CO
 
3
) · 12H
 
2
O
7.DG.15Carraraite
Ca
 
3
(SO
 
4
)[Ge(OH)
 
6
](CO
 
3
) · 12H
 
2
O
7.DG.15Buryatite
Ca
 
3
(Si,Fe,Al)(SO
 
4
)[B(OH)
 
4
]O(OH)
 
5
 · 12H
 
2
O
7.DG.20Rapidcreekite
Ca
 
2
(SO
 
4
)(CO
 
3
) · 4H
 
2
O
7.DG.20Korkinoite
Ca
 
4
(SO
 
4
)
 
2
(CO
 
3
)
 
2
 · 9(H
 
2
O)
7.DG.25Tatarskite
Ca
 
6
Mg
 
2
(SO
 
4
)
 
2
(CO
 
3
)
 
2
(OH)
 
4
Cl
 
4
 · 7H
 
2
O
7.DG.30Nakauriite
Cu
 
8
(SO
 
4
)
 
4
(CO
 
3
)(OH)
 
6
 · 48H
 
2
O
7.DG.35Chessexite
(Na,K)
 
4
Ca
 
2
(Mg,Zn)
 
3
Al
 
8
(SO
 
4
)
 
10
(SiO
 
4
)
 
2
 · 40H
 
2
O
7.DG.40Carlosruizite
K
 
6
(Na,K)
 
4
Na
 
6
Mg
 
10
(SeO
 
4
)
 
12
(IO
 
3
)
 
12
 · 12H
 
2
O
7.DG.40Fuenzalidaite
K
 
6
(Na,K)
 
4
Na
 
6
Mg
 
10
(SO
 
4
)
 
12
(IO
 
3
)
 
12
 · 12H
 
2
O
7.DG.45Chelyabinskite
(Ca,Mg)
 
3
(SO
 
4
,CO
 
3
)
 
2
[Si(OH)
 
6
] · 9H
 
2
O (?)
Related Minerals - Hey's Index Grouping:

- +
12.2.1Burkeite
Na
 
6
(CO
 
3
)(SO
 
4
)
 
2
12.2.2Hanksite
Na
 
22
K(SO
 
4
)
 
9
(CO
 
3
)
 
2
Cl
12.2.3Tychite
Na
 
6
Mg
 
2
(CO
 
3
)
 
4
(SO
 
4
)
12.2.4Motukoreaite
NaMg
 
19
Al
 
12
(SO
 
4
)
 
4
(CO
 
3
)
 
6.5
(OH)
 
54
 · 28H
 
2
O
12.2.5Ferrotychite
Na
 
6
(Fe,Mn,Mg)
 
2
(CO
 
3
)
 
4
(SO
 
4
)
12.2.6Nakauriite
Cu
 
8
(SO
 
4
)
 
4
(CO
 
3
)(OH)
 
6
 · 48H
 
2
O
12.2.7Carbonatecyanotrichite
Cu
 
4
Al
 
2
(CO
 
3
,SO
 
4
)(OH)
 
12
 · 2H
 
2
O
12.2.8Rapidcreekite
Ca
 
2
(SO
 
4
)(CO
 
3
) · 4H
 
2
O
12.2.9Tatarskite
Ca
 
6
Mg
 
2
(SO
 
4
)
 
2
(CO
 
3
)
 
2
(OH)
 
4
Cl
 
4
 · 7H
 
2
O
12.2.10Schulenbergite
(Cu,Zn)
 
7
(SO
 
4
,CO
 
3
)
 
2
(OH)
 
10
 · 3H
 
2
O
12.2.11Leadhillite
Pb
 
4
(CO
 
3
)
 
2
(SO
 
4
)(OH)
 
2
12.2.12Macphersonite
Pb
 
4
(CO
 
3
)
 
2
(SO
 
4
)(OH)
 
2
12.2.13Susannite
Pb
 
4
(CO
 
3
)
 
2
(SO
 
4
)(OH)
 
2
12.2.14Wherryite
Pb
 
7
Cu
 
2
(SO
 
4
)
 
4
(SiO
 
4
)
 
2
(OH)
 
2
12.2.15Caledonite
Cu
 
2
Pb
 
5
(SO
 
4
)
 
3
(CO
 
3
)(OH)
 
6
12.2.16Nasledovite
PbMn
 
3
Al
 
4
(CO
 
3
)
 
4
(SO
 
4
)O
 
5
 · 5H
 
2
O
12.2.18Schröckingerite
NaCa
 
3
(UO
 
2
)(CO
 
3
)
 
3
(SO
 
4
)F · 10H
 
2
O
12.2.19Manganotychite
Na
 
6
Mn
 
2
(CO
 
3
)
 
4
(SO
 
4
)
12.2.20Hauckite
Fe
3+
3
(Mg,Mn
2+
 
)
 
24
Zn
 
18
(SO
 
4
)
 
4
(CO
 
3
)
 
2
(OH)
 
81
12.2.21Paraotwayite
Ni(OH)
 
2-x
(SO
 
4
,CO
 
3
)
 
0.5x
12.2.22Carrboydite
(Ni,Cu)
 
14
Al
 
9
(SO
 
4
,CO
 
3
)
 
6
(OH)
 
43
 · 7H
 
2
O
12.2.23Mountkeithite
(Mg,Ni)
 
11
(Fe
3+
 
,Cr
3+
 
,Al)
 
3
(SO
 
4
,CO
 
3
)
 
3.5
(OH)
 
24
 · 11H
 
2
O
12.2.24Camerolaite
Cu
 
4
Al
 
2
(HSbO
 
4
,SO
 
4
)(CO
 
3
)(OH)
 
10
 · 2H
 
2
O

Other Names for Jouravskite

Synonyms:
IMA1965-009
Other Languages:
German:Jouravskit
Russian:Журавскит
Spanish:Jouravskita

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 Jouravskite

Reference List:

- +
American Mineralogist (1965): 50: 2102.

Acta Crystallographica: B25: 1943-1951.

Internet Links for Jouravskite

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  • Raman and XRD data at RRUFF project
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    • Localities for Jouravskite

    The 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.
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    (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.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
    		Bull.Soc.fr.Min.Crist.(1965) 88, 254-262
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese fields
        • Kuruman
          • N'Chwaning Mines
    		[Von Bezing, K. L. et al. (1991) - The Kalahari (Afrique du Sud) manganese field : an update, Mineralogical Record, 22 (3), 279-302.]
    Minerals of South Africa
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