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Cuspidine

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Big Photo

Ariccia, Alban Hills, Rome Province, Latium, Italy
© C.H.M.-Schäfer

Show Cuspidine Photos (38)



Formula:
Ca
 
4
(Si
 
2
O
 
7
)(F,OH)
 
2
System:MonoclinicColour:Colorless, tan, light ...
Hardness:5 - 6
Member of:Wöhlerite Group
Name:Named by Arcangelo Scacchi in 1876 from the Greek "cuspis," for a spear, the characteristic shape of the twinned crystals.
Isostructural with:Wöhlerite Group


Colorless to tan masses, occasionally pale red. Crystals have a steep termination.

The F analogue of Chlorocuspidine.

Classification of Cuspidine

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/C.11-05
Nickel-Strunz 10th (pending) edition ID:9.BE.17

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
Dana 8th edition ID:56.2.4.3

56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Hey's CIM Ref.:17.1.15

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)
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Type Occurrence of Cuspidine

Type Locality:Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy
Year of Discovery:1876

Physical Properties of Cuspidine

Lustre:Vitreous, Sub-Vitreous, Waxy
Diaphaneity (Transparency):Translucent
Colour:Colorless, tan, light brown, pale red.
Streak:White
Hardness (Mohs):5 - 6
Tenacity:Brittle
Cleavage:Distinct/Good
{100}, also {-122} poor
Fracture:Irregular/Uneven
Density (measured):2.97-2.99 g/cm3
Density (calculated):2.98 g/cm3

Crystallography of Cuspidine

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 10.93Å, b = 10.57Å, c = 7.57Å
β = 110.11°
Ratio:a:b:c = 1.034 : 1 : 0.716
Unit Cell Volume:V 821.24 ų (Calculated from Unit Cell)
Z:2
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.
X-Ray Powder Diffraction:
d-spacingIntensity
3.26 (20)
3.06 (100)
2.95 (20)
2.93 (20)
2.90 (30)
2.87 (50)
2.02 (10)
1.88 (20)
Comments:41-1474

Optical Data of Cuspidine

Type:Biaxial (+)
RI values: nα = 1.586 - 1.594 nβ = 1.589 - 1.596 nγ = 1.598 - 1.606
2V:Measured: 59° to 71°, Calculated: 58° to 66°
Birefringence:0.012-0.017
Maximum Birefringence:δ = 0.012

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v distinct
Pleochroism:Non-pleochroic

Chemical Properties of Cuspidine

Formula:
Ca
 
4
(Si
 
2
O
 
7
)(F,OH)
 
2
Essential elements:Ca, F, O, Si
All elements listed in formula:Ca, F, H, O, Si
Common Impurities:Mn,Na,K,Cl

Relationship of Cuspidine to other Species

Member of:Wöhlerite Group
Other Members of Group:

- +
Baghdadite
Ca
 
3
(Zr,Ti)(Si
 
2
O
 
7
)O
 
2
Burpalite
Na
 
2
CaZr(Si
 
2
O
 
7
)F
 
2
Hiortdahlite
(Ca,Na)
 
3
(Zr,Ti)(Si
 
2
O
 
7
)(O,OH,F)
 
2
Janhaugite
(Na,Ca)
 
3
(Mn
2+
 
,Fe
2+
 
)
 
3
(Ti,Zr,Nb)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
(OH,F)
 
2
Låvenite
(Na,Ca)
 
2
(Mn
2+
 
,Fe
2+
 
)(Zr,Ti)(Si
 
2
O
 
7
)(O,OH,F)
 
2
Niocalite
(Ca,Nb)
 
4
(Si
 
2
O
 
7
)(O,OH,F)
 
2
Normandite
NaCa(Mn,Fe)(Ti,Nb,Zr)(Si
 
2
O
 
7
)OF
Wöhlerite
NaCa
 
2
(Zr,Nb)(Si
 
2
O
 
7
)(O,OH,F)
 
2
Related Minerals - Nickel-Strunz Grouping):

- +
9.BE.02Wadsleyite
(Mg,Fe
2+
 
)
 
2
(SiO
 
4
)
9.BE.05Hennomartinite
SrMn
3+
2
(Si
 
2
O
 
7
)(OH)
 
2
 · H
 
2
O
9.BE.05Lawsonite
CaAl
 
2
(Si
 
2
O
 
7
)(OH)
 
2
 · H
 
2
O
9.BE.05Noelbensonite
BaMn
3+
2
(Si
 
2
O
 
7
)(OH)
 
2
 · H
 
2
O
9.BE.05Itoigawaite
SrAl
 
2
(Si
 
2
O
 
7
)(OH)
 
2
 · H
 
2
O
9.BE.07Ilvaite
CaFe
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
9.BE.07Manganilvaite
Ca(Mn
2+
 
,Fe
2+
 
)
 
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
9.BE.10Suolunite
Ca
 
2
(H
 
2
Si
 
2
O
 
7
) · H
 
2
O
9.BE.12Jaffeite
Ca
 
6
(Si
 
2
O
 
7
)(OH)
 
6
9.BE.15Fresnoite
Ba
 
2
Ti(Si
 
2
O
 
7
)O
9.BE.17Baghdadite
Ca
 
3
(Zr,Ti)(Si
 
2
O
 
7
)O
 
2
9.BE.17Burpalite
Na
 
2
CaZr(Si
 
2
O
 
7
)F
 
2
9.BE.17Hiortdahlite
(Ca,Na)
 
3
(Zr,Ti)(Si
 
2
O
 
7
)(O,OH,F)
 
2
9.BE.17Janhaugite
(Na,Ca)
 
3
(Mn
2+
 
,Fe
2+
 
)
 
3
(Ti,Zr,Nb)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
(OH,F)
 
2
9.BE.17Låvenite
(Na,Ca)
 
2
(Mn
2+
 
,Fe
2+
 
)(Zr,Ti)(Si
 
2
O
 
7
)(O,OH,F)
 
2
9.BE.17Niocalite
(Ca,Nb)
 
4
(Si
 
2
O
 
7
)(O,OH,F)
 
2
9.BE.17Normandite
NaCa(Mn,Fe)(Ti,Nb,Zr)(Si
 
2
O
 
7
)OF
9.BE.17Wöhlerite
NaCa
 
2
(Zr,Nb)(Si
 
2
O
 
7
)(O,OH,F)
 
2
9.BE.17Hiortdahlite I
Na
 
4
Ca
 
8
Zr
 
2
(Nb,Mn,Ti,Fe,Mg,Al)
 
2
(Si
 
2
O
 
7
)
 
4
O
 
3
F
 
5
9.BE.17Marianoite
Na
 
2
Ca
 
4
(Nb,Zr)
 
2
(Si
 
2
O
 
7
)
 
2
(O,F)
 
4
9.BE.20Mosandrite
(◻,Ca,Na)
 
3
(Ca,REE)
 
4
Ti(Si
 
2
O
 
7
)
 
2
[H
 
2
O,OH,F]
 
4
 · H
 
2
O
9.BE.20Nacareniobsite-(Ce)
Na
 
3
Ca
 
3
(Ce,La,Nd)Nb(Si
 
2
O
 
7
)
 
2
OF
 
3
9.BE.22Götzenite
Na
 
2
Ca
 
5
Ti(Si
 
2
O
 
7
)
 
2
F
 
4
9.BE.22Hainite
Na
 
4
Ca
 
8
(Ti,Zr,Mn)
 
3
(Si
 
2
O
 
7
)
 
4
F
 
4
9.BE.22Rosenbuschite
(Ca,Na)
 
3
(Zr,Ti)(Si
 
2
O
 
7
)OF
9.BE.22Kochite
(Na,Ca)
 
3
Ca
 
2
(Mn,Ca)ZrTi(Si
 
2
O
 
7
)
 
2
(F,O)
 
4
9.BE.23Dovyrenite
Ca
 
6
Zr(Si
 
2
O
 
7
)
 
2
(OH)
 
4
9.BE.25Barytolamprophyllite
(Ba,Na)
 
2
(Na,Ti,Fe
3+
 
)
 
4
Ti
 
2
(Si
 
2
O
 
7
)
 
2
O(OH,F)
9.BE.25Ericssonite
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
9.BE.25Lamprophyllite
(Sr,K,Ba)
 
2
(Na,Ti,Mn
2+
 
,Fe
3+
 
)
 
4
Ti
 
2
(Si
 
2
O
 
7
)
 
2
O(O,OH,F)
9.BE.25Ericssonite-2O
BaMn
2+
2
Fe
3+
 
(Si
 
2
O
 
7
)O(OH)
9.BE.25Seidozerite
Na
 
8
Mn
2+
2
Zr
 
3
Ti
 
3
(Si
 
2
O
 
7
)
 
4
O
 
4
F
 
4
9.BE.25Nabalamprophyllite
Na
 
3
(Ba,Na)
 
2
Ti
 
3
(Si
 
2
O
 
7
)
 
2
O
 
2
(OH,F)
 
2
9.BE.25Grenmarite
(Na,Ca)
 
4
(Mn,Na)(Zr,Mn)
 
2
(Zr,Ti)(Si
 
2
O
 
7
)
 
2
(O,F)
 
4
9.BE.25Schüllerite
Ba
 
2
Na(Mn,Ca)(Fe
3+
 
,Mg,Fe
2+
 
)
 
2
Ti
 
2
(Si
 
2
O
 
7
)
 
2
(O,F)
 
4
9.BE.25Lileyite
Ba
 
2
(Na,Fe,Ca)
 
3
MgTi
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
F
 
2
9.BE.27Murmanite
Na
 
2
Ti
 
2
(Si
 
2
O
 
7
)O
 
2
 · 2H
 
2
O
9.BE.30Epistolite
Na
 
2
(Nb,Ti)
 
2
(Si
 
2
O
 
7
)O
 
2
 · nH
 
2
O
9.BE.32Lomonosovite
Na
 
5
Ti
 
2
(Si
 
2
O
 
7
)(PO
 
4
)O
 
2
9.BE.35Vuonnemite
Na
 
11
Ti
4+
 
Nb
 
2
(Si
 
2
O
 
7
)
 
2
(PO
 
4
)
 
2
O
 
3
(F,OH)
9.BE.37Sobolevite
Na
 
13
Ca
 
2
Mn
 
2
Ti
 
3
(Si
 
2
O
 
7
)
 
2
(PO
 
4
)
 
4
O
 
3
F
 
3
9.BE.40Innelite
Na
 
2
CaBa
 
4
Ti
 
3
(Si
 
2
O
 
7
)
 
2
(SO
 
4
)
 
2
O
 
4
9.BE.40Phosphoinnelite
Na
 
3
Ba
 
4
Ti
 
3
(Si
 
2
O
 
7
)
 
2
(PO
 
4
,SO
 
4
)
 
2
O
 
2
F
9.BE.42Yoshimuraite
Ba
 
2
Mn
 
2
Ti(Si
 
2
O
 
7
)(PO
 
4
)O(OH)
9.BE.45Quadruphite
Na
 
14
Ca
 
2
Ti
 
4
(Si
 
2
O
 
7
)
 
2
(PO
 
4
)
 
2
O
 
2
F
9.BE.47Polyphite
Na
 
5
(Na
 
4
Ca
 
2
)Ti
 
2
(Si
 
2
O
 
7
)(PO
 
4
)
 
3
O
 
2
F
 
2
9.BE.50Bornemanite
Na
 
6
BaTi
 
2
Nb(Si
 
2
O
 
7
)
 
2
(PO
 
4
)O
 
2
(OH)F
9.BE.50Shkatulkaite
Na
 
10
Mn
2+
 
Ti
 
3
Nb
 
3
(Si
 
2
O
 
7
)
 
6
(OH)
 
2
F · 12H
 
2
O
9.BE.55Bafertisite
Ba(Fe
3+
 
,Mn
2+
 
)
 
2
Ti(Si
 
2
O
 
7
)O(O,OH)
 
2
9.BE.55Hejtmanite
Ba(Mn
2+
 
,Fe
2+
 
)
 
2
Ti(Si
 
2
O
 
7
)O(OH,F)
9.BE.55Bykovaite
(Ba,Na,K)
 
2
(Na,Ti,Mn)
 
4
(Ti,Nb)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
(H
 
2
O,F,OH)
 
2
 · 3.5H
 
2
O
9.BE.55Nechelyustovite
(Ba,Sr,K)
 
2
(Na,Ti,Mn)
 
4
(Ti,Nb)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
(O,H
 
2
O,F)
 
2
 · 4.5H
 
2
O
9.BE.60Delindeite
(Na,K)
 
2
(Ba,Ca)
 
2
(Ti,Fe,Al)
 
3
(Si
 
2
O
 
7
)
 
2
O
 
2
(OH)
 
2
 · 2H
 
2
O
9.BE.65Bussenite
Na
 
2
Ba
 
2
Fe
2+
 
Ti(Si
 
2
O
 
7
)(CO
 
3
)(OH)
 
3
F
9.BE.67Jinshajiangite
BaNaFe
2+
4
Ti
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
(OH)
 
2
F
9.BE.67Perraultite
BaNaMn
2+
4
Ti
 
2
 (Si
 
2
O
 
7
)
 
2
O
 
2
(OH)
 
2
F
9.BE.67Surkhobite
NaCaBa
 
2
Mn
 
8
Ti
 
4
(Si
 
2
O
 
7
)
 
4
O
 
5
F
 
5
9.BE.70Karnasurtite-(Ce)
(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si
 
2
O
 
7
)(OH)
 
4
 · 3H
 
2
O
9.BE.70Perrierite-(Ce)
(Ce,Ca,Th)
 
4
(Fe
2+
 
,Mg)Fe
3+
2
(Ti,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Strontiochevkinite
(Sr,La,Ce,Ca)
 
4
Fe
2+
 
(Ti,Zr)
 
2
Ti
 
2
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Chevkinite-(Ce)
(Ce,La,Ca,Th)
 
4
(Fe
2+
 
,Mg)(Fe
2+
 
,Ti,Fe
3+
 
)
 
2
(Ti,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Polyakovite-(Ce)
(Ce,Ca)
 
4
(Mg,Fe
2+
 
)(Cr
3+
 
,Fe
3+
 
)
 
2
(Ti,Nb)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Rengeite
Sr
 
4
ZrTi
 
4
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Matsubaraite
Sr
 
4
Ti
 
5
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Dingdaohengite-(Ce)
(Ce,La)
 
4
Fe
2+
 
(Ti,Fe
2+
 
,Mg,Fe
2+
 
)
 
2
Ti
 
2
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Maoniupingite-(Ce)
(Ce,Ca)
 
4
(Fe
3+
 
,Ti,Fe
2+
 
,◻)(Ti,Fe
3+
 
,Fe
2+
 
,Nb)
 
4
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Perrierite-(La)
(La,Ce,Ca)
 
4
(Fe,Mn
2+
 
,Mg)Fe
3+
2
(Ti,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70UKI-2008-(SiO:SrTiZr)
Sr
 
4
ZrTi
 
4
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.70Hezuolinite
(Sr,REE)
 
4
Zr(Ti,Fe
3+
 
)
 
4
(Si
 
2
O
 
7
)
 
2
O
 
8
9.BE.72Fersmanite
Ca
 
4
(Na,Ca)
 
4
(Ti,Nb)
 
4
(Si
 
2
O
 
7
)
 
2
O
 
8
F
 
3
9.BE.75Belkovite
Ba
 
3
(Nb,Ti)
 
6
(Si
 
2
O
 
7
)
 
2
O
 
12
9.BE.77Nasonite
Pb
 
6
Ca
 
4
(Si
 
2
O
 
7
)
 
3
Cl
 
2
9.BE.80Kentrolite
Pb
 
2
Mn
3+
2
(Si
 
2
O
 
7
)O
 
2
9.BE.80Melanotekite
Pb
 
2
Fe
3+
2
(Si
 
2
O
 
7
)O
 
2
9.BE.82Tilleyite
Ca
 
5
(Si
 
2
O
 
7
)(CO
 
3
)
 
2
9.BE.85Killalaite
Ca
 
3
(Si
 
2
O
 
7
) · 0.5H
 
2
O
9.BE.87Stavelotite-(La)
(La,Nd,Ca)
 
3
Mn
2+
3
Cu(Mn
3+
 
,Fe
3+
 
,Mn
4+
 
)
 
26
(Si
 
2
O
 
7
)
 
6
O
 
5
9.BE.90Biraite-(Ce)
Ce
 
2
Fe
2+
 
(Si
 
2
O
 
7
)(CO
 
3
)
9.BE.92Cervandonite-(Ce)
(Ce,Nd,La)(Fe
3+
 
,Fe
2+
 
,Ti,Al)
 
3
O
 
2
(Si
 
2
O
 
7
)(As
3+
 
O
 
3
)(OH)
9.BE.95Batisivite
BaV
3+
8
Ti
 
6
(Si
 
2
O
 
7
)O
 
22
Related Minerals - Hey's Index Grouping:

- +
17.1.1Hectorite
Na
 
0.3
(Mg,Li)
 
3
(Si
 
4
O
 
10
)(F,OH)
 
2
17.1.3Agrellite
NaCa
 
2
Si
 
4
O
 
10
F
17.1.4Apophyllite-(NaF)
NaCa
 
4
(Si
 
8
O
 
20
)F · 8H
 
2
O
17.1.5Apophyllite-(KF)
KCa
 
4
(Si
 
8
O
 
20
)(F,OH) · 8H
 
2
O
17.1.6Apophyllite-(KOH)
KCa
 
4
(Si
 
8
O
 
20
)(OH,F) · 8H
 
2
O
17.1.7Hsianghualite
Ca
 
3
Li
 
2
(Be
 
3
Si
 
3
O
 
12
)F
 
2
17.1.8Leucophanite
NaCaBeSi
 
2
O
 
6
F
17.1.9Norbergite
Mg
 
3
(SiO
 
4
)(F,OH)
 
2
17.1.10Chondrodite
(Mg,Fe
2+
 
)
 
5
(SiO
 
4
)
 
2
(F,OH)
 
2
17.1.11Humite
(Mg,Fe
2+
 
)
 
7
(SiO
 
4
)
 
3
(F,OH)
 
2
17.1.12Clinohumite
(Mg,Fe
2+
 
)
 
9
(SiO
 
4
)
 
4
(F,OH)
 
2
17.1.13Canasite
K
 
2
Na
 
4
Ca
 
5
(Si
 
12
O
 
30
(OH,F)
 
4
17.1.14Charoite
(K,Sr)
 
15-16
(Ca,Na)
 
32
[Si
 
6
O
 
11
(O,OH)
 
6
]
 
2
[Si
 
12
O
 
18
(O,OH)
 
12
]
 
2
[Si
 
17
O
 
25
(O,OH)
 
18
]
 
2
(OH,F)
 
4
 · ~3H
 
2
O
17.1.16Bultfonteinite
Ca
 
2
(HSiO
 
4
)F · H
 
2
O
17.1.17Zeophyllite
Ca
 
4
Si
 
3
O
 
8
(OH,F)
 
4
 · 2H
 
2
O
17.1.18Rowlandite-(Y)
(Y,Ce)
 
4
Fe
2+
 
(Si
 
2
O
 
7
)
 
2
F
 
2
 (?)
17.1.19Yuksporite
(K,Ba)NaCa
 
2
(Si,Ti)
 
4
O
 
11
(F,OH) · H
 
2
O
17.1.20Yftisite-(Y)
(Y,Dy,Er)
 
4
(Ti,Sn)(SiO
 
4
)
 
2
O(F,OH)
 
6
17.1.21Mosandrite
(◻,Ca,Na)
 
3
(Ca,REE)
 
4
Ti(Si
 
2
O
 
7
)
 
2
[H
 
2
O,OH,F]
 
4
 · H
 
2
O
17.1.22Hiortdahlite
(Ca,Na)
 
3
(Zr,Ti)(Si
 
2
O
 
7
)(O,OH,F)
 
2
17.1.23Burpalite
Na
 
2
CaZr(Si
 
2
O
 
7
)F
 
2
17.1.24Seidozerite
Na
 
8
Mn
2+
2
Zr
 
3
Ti
 
3
(Si
 
2
O
 
7
)
 
4
O
 
4
F
 
4
17.1.25Thorosteenstrupine
CaMnThSi
 
4
O
 
11
(OH)F · 6H
 
2
O
17.1.26Zircophyllite
(K,Na)
 
3
(Mn,Fe
2+
 
)
 
7
(Zr,Ti)
 
2
Si
 
8
O
 
24
(O,OH,F)
 
7
17.1.27Jinshajiangite
BaNaFe
2+
4
Ti
 
2
(Si
 
2
O
 
7
)
 
2
O
 
2
(OH)
 
2
F
17.1.28Rosenbuschite
(Ca,Na)
 
3
(Zr,Ti)(Si
 
2
O
 
7
)OF
17.1.29Narsarsukite
Na
 
4
(Ti,Fe)
 
2
[Si
 
8
O
 
20
](O,OH,F)
 
2
17.1.30Sonolite
Mn
2+
9
(SiO
 
4
)
 
4
(OH,F)
 
2

Other Names for Cuspidine

Other Languages:
German:Cuspidin
Russian:Куспидин

Other Information

Fluorescence in UV light:Franklin: SW = medium yellow to pale violet LW = strong yellow to pale violet
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 Cuspidine

Reference List:

- +
Dana, E.S. (1892) Dana's system of mineralogy, (6th edition), 533.

Tilley, C.E. (1947) Cuspidine from dolomite contact skarns, Broadford, Skye. Mineralogical Magazine: 28:
90-95.

Van Valkenberg, A. and G.F. Rynders (1958) Synthetic cuspidine. American Mineralogist: 43: 1195-1202.

Saburi, S., A. Kawahara, C. Henmi, I. Kusachi, and K. Kihara (1977) The refinement of the crystal structure of cuspidine. Mineralogical Journal (Japan), 8, 286-298.

Merlino S. & Perchiazzi N.(1988): Modular mineralogy in the cuspidine group of minerals. Canadian Mineralogist: 26: 933-943.

Internet Links for Cuspidine

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    • Localities for Cuspidine

    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.
    Hide Locality List
    (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.
    Australia
     
    • Victoria
    		Aust.Jour. Earth Sci. 46:251 (1999)
    Canada
     
    • Newfoundland and Labrador
      • Labrador
    		OWENS, B.E. & KREMSER, P.T. (2010) Åkermanite breakdown to cuspidine-bearing sympectite in a calc-silicate xenolith, Kiglapait intrusion, Labrador, Canada. Canadian Mineralogist 48, 809-819.
    China
     
    • Yunnan Province
      • Honghe Autonomous Prefecture
        • Gejiu Co.
    		Yiming Zhao and Daxin Li (1987): Acta Geoscientia Sinica 9(2), 237-252
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Mayen
          • Ettringen
            • Bellerberg volcano
    		[Hentschel, G., Seltene Minerale in Calcium-reichen Auswürflingen vom Bellerberg bei Mayen/Eifel, Aufschluß 29, 77-83, 1978] [Lapis, 15 (5), 9-36]
    • Thuringia
      • Gera
        • Ronneburg U deposit
    		T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
    Iraq
     
    • Qala-Diz (Qala-Dizeh; Qala-Diza)
      • Hero
    		Al-Hermezi, H. M., McKie, D., & Hall, A. J. (1986). Baghdadite, a new calcium zirconium silicate mineral from Iraq. Mineralogical Magazine, 50, 119-123.
    Ireland
     
    • Co. Sligo
      • Killala Bay
    		Bull. Soc. Franç. Minéralo. Cristallo. , 1974, 97, p. 506.
    Israel
     
    • Negev
    		Gross, S. (1977): The Mineralogy of the Hatrurim Formation, Israel. Geological Survey of Israel, Bulletin no. 70, 80 pp.
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    		[Am Min 43 (1958), 1195; Lapis 1994:5 p.13-23,58]
            • Ercolano
              • San Vito
    		M. Carati: Guida alla mineralogia vesuviana. Bologna, Ed. Calderini (1982)
    • Latium
      • Rome Province
    		Federico, M., Peccerillo, A., (2002): Mineral chemistry and petrogenesis of granular ejecta from the Alban Hills volcano, Mineralogy and Petrology, Vol 74, 223-252
    De Michele, V. (1974). Guida mineralogica d'Italia. Istituto Geografico De Agostini, Novara, 2 vol
        • Bracciano Lake
          • Castel Giuliano
    		Dario Di Domenico collection
        • Campagnano di Roma
    		• Stoppani, F.S. & Curti, E. (1982): I minerali del Lazio. Editoriale Olimpia, Firenze, 291 pp.
      • Viterbo Province
        • Làtera volcano
          • Gradoli
    		- Signoretti, E. & Bosco, P. (2001): Le cave di Gradoli e Onano. Il Cercapietre, 1/2-2001, 10-25
          • Onano
    		M.E. Ciriotti (2005) Probed
    Lapis 28(12), 19-28 (2003)
    • Tuscany
      • Grosseto Province
        • Pitigliano
    		Liotti L., 1991. I minerali dei vulcani laziali a Pitigliano (Grosseto). Riv. Mineral. Ital., 15 (3): 121-139.
    • Umbria
      • Terni Province
        • San Venanzo
    		Stoppa, F., Sharygin, V.V., and Cundari, A. (1997): Mineralogy and Petrology 61, 27-45.
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Okayama Prefecture
          • Takahashi City
            • Bitchu-cho-fuka (Bicchu-cho-fuka)
    		Mineralogical Record: 27: 303.; Journal of Mineralogical and Petrological Sciences Vol. 99 (2004) , No. 2 April 67-71
            • Bitchu-cho-shitouyouze(Bicchu-cho-shitouyouze)
    		Matsueda, H. (1983) Journal of the Mining College, Akita University, Ser. A, Mining Geology, 6, #3, 259-292.
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    		Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
    New Zealand
     
    • South Island
    		Railton, G.L. & Watters, W.A., Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (1990).
    Norway
     
    • Telemark
      • Skien
    		Jamtveit B., Dahlgren S. and Austrheim H. (1997): High-grade contact metamorphism of calcareous rocks from the Oslo Rift, Southern Norway. American Mineralogist. 82 : 1241 - 1254
    Palestine
     
    • West Bank
      • Hatrurim Formation
    		Seryotkin Y.V., Sokol E.V. & Kokh S.N. 2012: Natural pseudowollastonite: Crystal structure, associated minerals, and geological context. Lithos, vol. 134-135, pp. 75-90; Seryotkin, Yu.V., Sokol, E.V., Kokh, S.N. (2012): Natural pseudowollastonite: Crystal structure, associated minerals, and geological context. Lithos, 134–135, 75-90.
    Poland
     
    • Upper Silesia (Śląskie)
      • Upper Silesian Coal Basin
        • Katowice area
          • Siemianowice Śląskie
    		Kruszewski L. 2006: Oldhamite-periclase-portlandite-fluorite assemblage and coexisting minerals of burnt dump in Siemianowice Śląskie - Dąbrówka Wielka area (Upper Silesia, Poland) - preliminary report. Mineralogia Polonica Special Papers, vol.28, 118-120
    Romania
     
    • Alba Co.
      • Apuseni District
    		The Canadian Mineralogist Vol. 39, pp. 1405-1434 (2001)
    • Caraş-Severin Co.
      • Banat Mts
    		Marincea, S., Dumitraş. D-G., Ghinet, C, Fransolet, A.-M., Hatert, F. & Rondeaux, M. (2011): Gehlenite from three occurrences of high-temperature skarns, Romania: new mineralogical data. Canadian Mineralogist. 49, 1001-1014
    • Harghita Co.
      • Odorheiu Secuiesc (Székelyudvarhely; Oderhellen)
        • Racoş (Racoşu de Jos)
    		Szakáll, S. & Kristály, F., Eds. (2010): Mineralogy of Székelyland, Eastern Transylvania, Romania. Csík County Nature and Conservation Society, Miercurea-Ciuc, Romania, 321 pp.
    • Hunedoara Co.
      • Hunedoara
    		The Canadian Mineralogist Vol. 39, pp. 1405-1434 (2001)
    Russia
     
    • Eastern-Siberian Region
      • Tuva Republic
        • Sayan Mts
          • Eastern Sayan
    		Andreeva, I.A., (2006) Genesis Of The Alkaline Rocks And Carbonatites From The Belaya Zima Carbonatite Complex (Eastern Sayan, Russia): Evidence From Melt Inclusions. in Geological Association of Canada, Program with Abstracts Volume 31
    • Northern Caucasus Region
      • Kabardino-Balkarian Republic
        • Baksan Valley
    		P.M. Kartashov data
        • Verkhnechegemskaya caldera (Verkhni Chegem caldera; Upper Chegem caldera)
    		Galuskina, I.O., Galuskin, E.V., Dzierzanowski, P., Gazeev, V.M., Prusik, K., Pertsev, N.N., Winiarski, A., Zadov, A.E., and Wrzalik, R. (2010): American Mineralogist 95(8-9), 1305-1311.; American Mineralogist, Volume 94, pages 1361–1370, 2009
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
    		www.koeln.netsurf.de/~w.steffens/khib.htm
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Chelyabinsk coal basin
    		Cesnokov, B., M. Kotrly, and T. Nisanbajev (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
    Tanzania
     
    • Arusha Region
    		Mitchell, R.H. and Belton, F. (2004) Niocalite-cuspidine solid solution and manganoan monticellite from natrocarbonatite, Oldoinyo Lengai, Tanzania. Mineralogical Magazine: 68: 787-799.
    UK
     
    • Scotland
      • North West Highlands (Argyllshire)
        • Ardnamurchan
    		Mineralogical Magazine 1965 34 : 1-15.
      • North West Highlands (Inverness-shire)
        • Isle of Muck
    		Tilley, C.E. (1947) The gabbro-limestone contact zone of Camas Mor, Muck, Inverness-shire. Comptes Rendus de la Société geologique de Finlande, No. 140, 97–105.
        • Isle of Skye
          • Broadford
            • Kilchrist
    		Tilley, C.E. (1947) Cuspidine from dolomite contact skarns, Broadford, Skye. Mineralogical Magazine: 28: 90-95.
    USA
     
    • California
      • Riverside Co.
        • Crestmore
          • Crestmore quarries
            • Sky Blue Hill
    		Tilley, Cecil Edgar (1947), Cuspidine from dolomite contact skarns, Broadford, Skye: Mineralogical Magazine: 28: 90-95; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 477.
    • Idaho
      • Custer Co.
    		Rocks & Minerals (1995) 70: 250.
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Palache(1935):102; Dunn(1995):Pt3:409.
    • New York
      • Essex Co.
        • Keene
          • Cascade Mountain
    		Contrib. Mineral. Petrol. 74, 143-152 (1980)
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