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Rapidcreekite

Formula:
Ca
 
2
[CO
 
3
|SO
 
4
] · 4H
 
2
O
System:OrthorhombicColour:White, colourless.
Lustre:VitreousHardness:2
Name: Named after the Rapid Creek area, Yukon, the type locality.
This page provides mineralogical data about Rapidcreekite.

Classification of Rapidcreekite

IMA status:Approved
Strunz 8th edition ID:6/C.22-25
Nickel-Strunz 10th (pending) edition ID:7.DG.20

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:32.2.1.1

32 : COMPOUND SULFATES
2 : Hydrated Compound Sulfates
Hey's CIM Ref.:12.2.8

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

Type Locality:Rapid Creek, Dawson Mining District, Yukon Territory, Canada
Year of Discovery:1986

Physical Properties of Rapidcreekite

Lustre:Vitreous
Colour:White, colourless.
Hardness (Mohs):2

Crystallography of Rapidcreekite

Crystal System:Orthorhombic
Cell Parameters:a = 15.49Å, b = 19.18Å, c = 6.15Å
Ratio:a:b:c = 0.808 : 1 : 0.321
Unit Cell Volume:V 1,827.15 ų (Calculated from Unit Cell)

Optical Data of Rapidcreekite

Type:Biaxial (+)
RI values: nα = 1.516 nβ = 1.518 nγ = 1.531
2V:Measured: 45° , Calculated: 44°
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Dispersion:none

Chemical Properties of Rapidcreekite

Formula:
Ca
 
2
[CO
 
3
|SO
 
4
] · 4H
 
2
O
Essential elements:C, Ca, H, O, S
All elements listed in formula:C, Ca, H, O, S

Relationship of Rapidcreekite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.DG.05Darapskite
Na
 
3
NO
 
3
SO
 
4
·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
[(OH)
 
4
|SO
 
4
]
 
3
· 26H
 
2
O
7.DG.15Charlesite
Ca
 
6
(Al,Si)
 
2
[(OH,O)
 
12
|B(OH)
 
4
|(SO
 
4
)
 
2
] · 26H
 
2
O
7.DG.15Ettringite
Ca
 
6
Al
 
2
[(OH)
 
4
|SO
 
4
]
 
3
· 26H
 
2
O
7.DG.15Jouravskite
Ca
 
6
Mn
3+
2
[(OH)
 
4
|(SO
 
4
,CO
 
3
)]
 
3
· 26H
 
2
O
7.DG.15Sturmanite
Ca
 
6
(Fe
3+
 
,Al,Mn
3+
 
)
 
2
[(OH)
 
12
|B(OH)
 
4
|(SO
 
4
)
 
2
] · 25H
 
2
O
7.DG.15Thaumasite
Ca
 
3
[CO
 
3
|SO
 
4
|Si(OH)
 
6
] · 12H
 
2
O
7.DG.15Carraraite
Ca
 
3
Ge(OH)
 
6
(SO
 
4
)(CO
 
3
)·12H
 
2
O
7.DG.15Buryatite
Ca
 
3
(Si,Fe,Al)[SO
 
4
][B(OH)
 
4
](OH)
 
5
O•
 
12
H
 
2
O
7.DG.20Korkinoite
Ca, SO
 
4
, H
 
2
O reported
7.DG.25Tatarskite
Ca
 
6
Mg
 
2
(SO
 
4
)
 
2
(CO
 
3
)
 
2
Cl
 
4
(OH)
 
4
·7H
 
2
O
7.DG.30Nakauriite
Cu
 
8
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
4
] · 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
SO
 
4
(CO
 
3
)
 
4
12.2.4Motukoreaite
NaMg
 
19
Al
 
12
(CO
 
3
)
 
6.5
(SO
 
4
)
 
4
(OH)
 
54
·28H
 
2
O
12.2.5Ferrotychite
Na
 
6
(Fe,Mn,Mg)
 
2
SO
 
4
(CO
 
3
)
 
4
12.2.6Nakauriite
Cu
 
8
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
4
] · 48H
 
2
O
12.2.7Carbonatecyanotrichite
Cu
 
4
Al
 
2
[(OH)
 
12
|(CO
 
3
,SO
 
4
)] · 2H
 
2
O
12.2.9Tatarskite
Ca
 
6
Mg
 
2
(SO
 
4
)
 
2
(CO
 
3
)
 
2
Cl
 
4
(OH)
 
4
·7H
 
2
O
12.2.10Schulenbergite
(Cu,Zn)
 
7
[(OH)
 
10
|(SO
 
4
,CO
 
3
)
 
2
] · 3H
 
2
O
12.2.11Leadhillite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
12.2.12Macphersonite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
12.2.13Susannite
Pb
 
4
SO
 
4
(CO
 
3
)
 
2
(OH)
 
2
12.2.14Wherryite
Pb
 
4
CuCO
 
3
(SO
 
4
)
 
2
(Cl,OH)
 
2
O
12.2.15Caledonite
Cu
 
2
Pb
 
5
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
3
]
12.2.16Nasledovite
PbMn
 
3
Al
 
4
(CO
 
3
)
 
4
SO
 
4
O
 
5
·5H
 
2
O
12.2.17Jouravskite
Ca
 
6
Mn
3+
2
[(OH)
 
4
|(SO
 
4
,CO
 
3
)]
 
3
· 26H
 
2
O
12.2.18Schröckingerite
NaCa
 
3
(UO
 
2
)[F|(CO
 
3
)
 
3
|SO
 
4
] · 10H
 
2
O
12.2.19Manganotychite
Na
 
6
Mn
 
2
SO
 
4
(CO
 
3
)
 
4
12.2.20Hauckite
Fe
3+
3
(Mg,Mn
2+
 
)
 
24
Zn
 
18
[(OH)
 
81
|(CO
 
3
)
 
2
|(SO
 
4
)
 
4
]
12.2.21Paraotwayite
Ni(OH)
 
2-x
(SO
 
4
,CO
 
3
)
 
0.5x
12.2.22Carrboydite
(Ni,Cu)
 
14
Al
 
9
[(OH)
 
43
|(SO
 
4
,CO
 
3
)
 
6
] · 7H
 
2
O
12.2.23Mountkeithite
(Mg,Ni)
 
11
(Fe
3+
 
,Cr
3+
 
,Al)
 
3
[(OH)
 
24
|(SO
 
4
,CO
 
3
)
 
3.5
] · 11H
 
2
O
12.2.24Camerolaite
Cu
 
4
Al
 
2
[(OH)
 
10
|CO
 
3
|(HSbO
 
4
,SO
 
4
)] · 2H
 
2
O

Other Names for Rapidcreekite

Synonyms:
IMA1984-035
Other Languages:
German:Rapidcreekit
Russian:Рапидкрикит
Spanish:Rapidcreekita

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 Rapidcreekite

Reference List:American Mineralogist (1987): 72: 225.

Canadian Mineralogist (1996): 34: 99-106.

Articles/Blogs about Rapidcreekite

Internet Links for Rapidcreekite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Rapidcreekite in the Natural History Museum (London) online catalogue
  • Rapidcreekite details from Handbook of Mineralogy (PDF)
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    Localities for Rapidcreekite

    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.
    Canada
     
    • Yukon Territory
      • Dawson Mining District
    MinRec 23:4-47
    [Can.Min.(1986) 24, 51-54; MinRec 23:Yukon 38, 17:340]
          • Kulan Camp
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Schenkenzell
          • Wittichen
            • Burgfelsen
    No reference listed
    • Thuringia
      • Saalfeld
        • Garnsdorf
    Rüger, F.; Senf, L. & Witzke, T. (1995): Die Saalfelder Feengrotten: Seltene Sekundärmineralien aus Thüringen.- Lapis 20, 1, 15-26
    Norway
     
    • Buskerud
    Mineralogical Record: 32: 196.
        • Kongsberg Silver Mines
          • Overbergets Mine-field
    Raade,G. (1989): "Etter Neumann". NAGS-nytt 16(2), 49
    Mineral and/or Locality
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