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Cancrisilite

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Formula:
Na7(Al5Si7O24)(CO3) · 3H2O
System:
Hexagonal
Colour:
colourless, lilac, pale ...
Hardness:
5
Name:
Named in allusion to the relatively high ratio of silicon to aluminumin its composition, and its relationship to cancrinite.

Classification of Cancrisilite

Approved 1990
9.FB.05

9 : SILICATES (Germanates)
F : Tektosilicates without zeolitic H2O
B : Tektosilicates with additional anions
76.2.5.4

76 : TECTOSILICATES Al-Si Framework
2 : Al-Si Framework Feldspathoids and related species
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First Recorded Occurrence of Cancrisilite

Year of Discovery:
1990

Physical Properties of Cancrisilite

Colour:
colourless, lilac, pale violet
Streak:
white
Hardness (Mohs):
5
Cleavage:
None Observed

Crystallography of Cancrisilite

Crystal System:
Hexagonal
Cell Parameters:
a = 12.57Å, c = 5.1Å
Ratio:
a:c = 1 : 0.406
Unit Cell Volume:
V 697.86 ų (Calculated from Unit Cell)

Optical Data of Cancrisilite

Type:
Uniaxial (-)
RI values:
nω = 1.509 nε = 1.490
Max Birefringence:
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of Cancrisilite

Formula:
Na7(Al5Si7O24)(CO3) · 3H2O
Essential elements:
All elements listed in formula:
Common Impurities:
Ca,Mn,Fe,K,S

Relationship of Cancrisilite to other Species

Other Members of Group:
Afghanite(Na,Ca,K)8(Al6Si6O24)(Cl2,SO4,CO3)3 · 0.5H2O
Alloriite(Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6
Balliranoite(Na,K)6Ca2(Si6Al6O24)Cl2(CO3)
Biachellaite(Na,Ca,K)8(Al6Si6O24)(SO4)2(OH)0.5 · H2O
Bystrite(Na,K)7Ca(Al6Si6O24)(S3)1.5 · H2O
Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Davyne(Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2
DepmeieriteNa8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x<0.5)
Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2O
Giuseppettite(Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2
HydroxycancriniteNa8(Al6Si6O24)(OH)2 · 2H2O
KircheriteNa5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2O
KyanoxaliteNa7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5)
Liottite(Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4
Marinellite(Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2O
MicrosommiteNa4K2Ca2(Al6Si6O24)(SO4)Cl2
PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2O
Quadridavyne(Na,K)6Ca2(Al6Si6O24)Cl4
Sacrofanite(Na,K)98Ca20(Al6Si6O24)14(SO4)26Cl2 · 8H2O
Tounkite(Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2O
Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2O
9.FB.05Afghanite(Na,Ca,K)8(Al6Si6O24)(Cl2,SO4,CO3)3 · 0.5H2O
9.FB.05Bystrite(Na,K)7Ca(Al6Si6O24)(S3)1.5 · H2O
9.FB.05Cancrinite(Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
9.FB.05Davyne(Na,K)6Ca2(Al6Si6O24)(Cl2,SO4)2
9.FB.05Franzinite(Na,K)6Ca2(Al6Si6O24)(SO4)2 · 0.5H2O
9.FB.05Giuseppettite(Na,K,Ca)7-8(Al6Si6O24)(SO4,Cl)1-2
9.FB.05HydroxycancriniteNa8(Al6Si6O24)(OH)2 · 2H2O
9.FB.05Liottite(Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4
9.FB.05MicrosommiteNa4K2Ca2(Al6Si6O24)(SO4)Cl2
9.FB.05PitiglianoiteNa6K2(Al6Si6O24)(SO4) · 2H2O
9.FB.05Quadridavyne(Na,K)6Ca2(Al6Si6O24)Cl4
9.FB.05Sacrofanite(Na,K)98Ca20(Al6Si6O24)14(SO4)26Cl2 · 8H2O
9.FB.05Tounkite(Na,Ca,K)8(Al6Si6O24)(SO4)2Cl · H2O
9.FB.05Vishnevite(Na,K)8(Al6Si6O24)(SO4,CO3) · 2H2O
9.FB.05Marinellite(Na,K)42Ca6(Al6Si6O24)6(SO4)8Cl2 · 3H2O
9.FB.05Farneseite(Na,Ca,K)56(Al6Si6O24)7(SO4)12 · 6H2O
9.FB.05Alloriite(Na,Ca,K)26Ca4(Al6Si6O24)4(SO4)6Cl6
9.FB.05Fantappièite[Na82.5Ca33K16.5](Si99Al99O396)(SO4)33 · 4H2O
9.FB.05KyanoxaliteNa7(Al6-xSi6+xO24)(C2O4)0.5+x · 5H2O (0 < x < 0.5)
9.FB.05Balliranoite(Na,K)6Ca2(Si6Al6O24)Cl2(CO3)
9.FB.05CarbobystriteNa8(Al6Si6O24)(CO3) · 3.5H2O
9.FB.05DepmeieriteNa8(Al6Si6O24)(PO4,CO3)1-x · 3H2O (x<0.5)
9.FB.05KircheriteNa5Ca2K(Al6Si6O24)(SO4)2 · 0.33H2O
9.FB.10BicchuliteCa2(Al2SiO6)(OH)2
9.FB.10DanaliteFe42+(Be3Si3O12)S
9.FB.10GenthelviteZn4(Be3Si3O12)S
9.FB.10Haüyne(Na,Ca)4-8(Al6Si6O24)(SO4,S,Cl)1-2
9.FB.10HelvineMn42+(Be3Si3O12)S
9.FB.10KamaishiliteCa2(Al2SiO6)(OH)2
9.FB.10LazuriteNa6 Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
9.FB.10NoseanNa8(Al6Si6O24)(SO4) · H2O
9.FB.10SodaliteNa8(Al6Si6O24)Cl2
9.FB.10Tsaregorodtsevite(N(CH3)4)(AlSi5O12)
9.FB.10TugtupiteNa4(AlBeSi4O12)Cl
9.FB.15MarialiteNa4Al3Si9O24Cl
9.FB.15MeioniteCa4Al6Si6O24CO3
9.FB.15Silvialite(Ca,Na)4(Al6Si6O24)(SO4,CO3)

Other Names for Cancrisilite

Name in Other Languages:

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 Cancrisilite

Reference List:
New Mins. (1997), New Minerals 1990-1994.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 120(6): 80-84.

Internet Links for Cancrisilite

Localities for Cancrisilite

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 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.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
TARASSOFF, P. (2007) Cancrisilite, litvinskite and kapustinite from Mont Saint-Hilaire. MICRONEWS, 41(2), 3-4.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65.
          • Kukisvumchorr Mt
            • Kirovskii apatite mine (Kirovsky Mine; Kirovskii Mine; Kirov Mine)
I. V. Pekov, N. V. Chukanov, V. T. Dubinchuk & A. E. Zadov (2006): Middendorfite, K3Na2Mn5Si12(O,OH)36• 2H2O, a new mineral from Khibiny Massif, Kola Peninsula. Proceedings of the Russian Mineralogical Society, 135(3), 42–52.
O.A. Ageeva data
          • Yukspor Mt
Pavel M. Kartashov data
        • Lovozero Massif
[ZVMO (1991) 120, n6, 80-; World of Stones 95:5-6, p. 64]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
Mineral and/or Locality  
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