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Canaphite

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Formula:
Na
 
2
Ca(P
 
2
O
 
7
) · 4H
 
2
O
System:MonoclinicColour:Colourless
Lustre:VitreousHardness:2
Name:Named in 1985 by Donald Ralph Peacor, Pete J. Dunn, William B. Simmons, and Fred John Wicks after its composition, containing CAlcium, sodium (Latin = NAtrium), and PHophorus.


The mineral consists of tiny colorless needles (to about 100 +/- microns) completely covering pieces of stilbite. The type material came from mineral collector, Sid Steris, who on being told of its being named a new mineral revealed that he had cleaned the lot is a mild phosphoric acid solution and who believed the efflorescence of needles were just a result of chemical cleaning of the stilbite.

Classification of Canaphite

IMA status:Approved 1983
Strunz 8th edition ID:7/C.35-10
Nickel-Strunz 10th (pending) edition ID:8.FC.10

8 : PHOSPHATES, ARSENATES, VANADATES
F : Polyphosphates, Polyarsenates, [4]-Polyvanadates
C : Polyphosphates, etc., with H2O only
Dana 8th edition ID:40.7.4.

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
7 : Miscellaneous
Hey's CIM Ref.:19.4.6

19 : Phosphates
4 : Phosphates of Ca
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Type Occurrence of Canaphite

Type Locality:Great Notch Corp. Quarry, Great Notch, Little Falls Township, Passaic Co., New Jersey, USA
Year of Discovery:1983

Physical Properties of Canaphite

Lustre:Vitreous
Colour:Colourless
Streak:White
Hardness (Mohs):2

Crystallography of Canaphite

Crystal System:Monoclinic

Optical Data of Canaphite

Type:Biaxial (-)
RI values: nα = 1.496 nβ = 1.504 nγ = 1.506
2V:Measured: 52° , Calculated: 52°
Maximum Birefringence:δ = 0.010

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

Chemical Properties of Canaphite

Formula:
Na
 
2
Ca(P
 
2
O
 
7
) · 4H
 
2
O
Simplified for copy/paste:Na2Ca(P2O7)·4H2O
Essential elements:Ca, H, Na, O, P
All elements listed in formula:Ca, H, Na, O, P

Relationship of Canaphite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.FC.05Fianelite
Mn
2+
2
((V,As)
 
2
O
 
7
) · 2H
 
2
O
8.FC.15Pintadoite
Ca
 
2
(V
 
2
O
 
7
) · 9H
 
2
O
8.FC.20Arnhemite
(K,Na)
 
4
Mg
 
2
(P
 
2
O
 
7
)
 
2
· 5H
 
2
O
8.FC.25Wooldridgeite
Na
 
2
CaCu
2+
2
(P
 
2
O
 
7
)
 
2
· 10H
 
2
O
8.FC.30Kanonerovite
Na
 
3
Mn
2+
 
(P
 
3
O
 
10
) · 12H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.4.1Monetite
Ca(HPO
 
4
)
19.4.2Hydroxylapatite
Ca
 
5
(PO
 
4
)
 
3
(OH)
19.4.3Brushite
Ca(HPO
 
4
) · 2H
 
2
O
19.4.4Isoclasite
Ca
 
2
(PO
 
4
)(OH) · 2H
 
2
O
19.4.5Buchwaldite
NaCa(PO
 
4
)
19.4.7Mundrabillaite
(NH
 
4
)
 
2
Ca(HPO
 
4
)
 
2
· H
 
2
O
19.4.8Whitlockite
Ca
 
9
Mg(PO
 
4
)
 
6
(HPO
 
4
)
19.4.9Brianite
Na
 
2
CaMg(PO
 
4
)
 
2
19.4.10Petersite-(Y)
(Y,Ce,Nd)Cu
 
6
(PO
 
4
)
 
3
(OH)
 
6
· 3H
 
2
O

Other Names for Canaphite

Synonyms:
IMA1983-067
Other Languages:
German:Canaphit
Russian:Канафит
Spanish:Canaphita

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 Canaphite

Reference List:

- +
American Mineralogist: 73: 168-171.

Mineralogical Record: 16: 467-468.

Internet Links for Canaphite

Search Engines:
  • Look for Canaphite on Google
  • Look for Canaphite images on Google
  • External Links:
  • Look for Canaphite on Webmineral
  • Look for Canaphite on Athena Mineralogy
  • Look for Canaphite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Canaphite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Buy minerals from YourMineralCollection
  • The Arkenstone - Fine Minerals
  • Buy rare minerals from Excalibur Minerals
  • Find Canaphite on www.crystalclassics.co.uk
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Fine and rare minerals from mintreasure.com
  • Wilensky Fine Minerals
  • Buy from David K Joyce minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • rare and unusual minerals mainly crystallized
  • High-end worldwide specimens & outstanding customer service
  • Fine Minerals from Weinrich Minerals, Inc.
  • Localities for Canaphite

    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.
    (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.
    USA
     
    • New Jersey
      • Passaic Co.
        • Little Falls Township
          • Great Notch
    Peacor, et al (1985), Steriss, et al (1987)
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