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Micheelsenite

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Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada
© SMS 2006

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Formula:
(Ca,Y)
 
3
Al(PO
 
3
OH,CO
 
3
)(CO
 
3
)(OH)
 
6
·12H
 
2
O
System:HexagonalColour:White to colourless
Lustre:VitreousHardness:3½ - 4
This page provides mineralogical data about Micheelsenite.

Classification of Micheelsenite

IMA status:Approved
Nickel-Strunz 10th (pending) edition ID:8.DO.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
O : With CO3, SO4, SiO4
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Type Occurrence of Micheelsenite

Co-type Localities:Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mont Saint-Hilaire, Rouville Co., Québec, Canada
Nanna pegmatite, Narsaarsuup Qaava, Narssârssuk (Narsarsuk), Igaliku (Igaliko), Narsaq, Kitaa (West Greenland) Province, Greenland

Physical Properties of Micheelsenite

Lustre:Vitreous
Colour:White to colourless
Streak:White
Hardness (Mohs):3½ - 4

Crystallography of Micheelsenite

Crystal System:Hexagonal

Optical Data of Micheelsenite

Type:Uniaxial (-)
RI values: nω = 1.532 nε = 1.503
Maximum Birefringence:δ = 0.029

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

Chemical Properties of Micheelsenite

Formula:
(Ca,Y)
 
3
Al(PO
 
3
OH,CO
 
3
)(CO
 
3
)(OH)
 
6
·12H
 
2
O
Essential elements:Al, C, Ca, H, O, P
All elements listed in formula:Al, C, Ca, H, O, P, Y

Relationship of Micheelsenite to other Species

Related Minerals - Nickel-Strunz Grouping):
8.DO.05Girvasite
NaCa
 
2
Mg
 
3
[(OH)
 
2
|CO
 
3
|H
 
2
PO
 
4
|(PO
 
4
)
 
2
] · 4H
 
2
O
8.DO.10Voggite
Na
 
2
Zr[OH|CO
 
3
|PO
 
4
] · 2H
 
2
O
8.DO.15Peisleyite
Na
 
3
Al
 
16
[SO
 
4
|(PO
 
4
)
 
5
]
 
2
 · 20H
 
2
O
8.DO.20Perhamite
(Ca,Sr)
 
3
Al
 
7.7
Si
 
3
P
 
4
O
 
23.5
(OH)
 
14.1
·8H
 
2
O
8.DO.25Saryarkite-(Y)
Ca(Y,Th)Al
 
5
(SiO
 
4
)
 
2
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
7
·6H
 
2
O
8.DO.40Parwanite
(Na,K)(Mg,Ca)
 
4
Al
 
8
(PO
 
4
)
 
8
(CO
 
3
)(OH)
 
7
·30H
 
2
O
8.DO.45Skorpionite
Ca
 
3
Zn
 
2
[(OH)
 
2
|CO
 
3
|(PO
 
4
)
 
2
] · H
 
2
O

Other Names for Micheelsenite

Synonyms:
IMA1999-033Unnamed (MSH UK-32)
German names:
Micheelsenit
Spanish names:
Micheelsenita

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 Micheelsenite

Reference List:Neues Jahrbuch für Mineralogie, Monatshefte (2001): 337-351.

Articles/Blogs about Micheelsenite

Internet Links for Micheelsenite

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  • Raman and XRD data at RRUFF project
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    Localities for Micheelsenite

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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
     
    • Québec
      • Rouville Co.
        • Mont Saint-Hilaire
    		[N. Jahrb.Min.,Mh.(2001) 337-351; MinRec 33:165]
    Greenland
     
    • Kitaa (West Greenland) Province
      • Narsaq
        • Igaliku (Igaliko)
          • Narssârssuk (Narsarsuk)
            • Narsaarsuup Qaava
    		[MinRec 33:165]
    Mineral and/or Locality
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