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Clinozoisite-(Sr)

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Formula:
{CaSr}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
System:MonoclinicColour:pale grey to yellowish ...
Hardness:5 - 5½
Member of:Epidote Group
Name:Originally named for Niigata prefecture, where the type locality is.


Epidote Group. Originally known as niigataite; renamed by the Epidote Subcommittee of the CNMMN in 2006.

Classification of Clinozoisite-(Sr)

IMA status:Approved 2001
Strunz 8th edition ID:8/C.23-35
Nickel-Strunz 10th (pending) edition ID:9.BG.05

9 : SILICATES (Germanates)
B : Sorosilicates
G : Sorosilicates with mixed SiO4 and Si2O7 groups; cations in octahedral [6] and greater coordination
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Type Occurrence of Clinozoisite-(Sr)

Type Locality:Miyabana beach, Ohmi, Itoigawa City, Niigata Prefecture, Chubu Region, Honshu Island, Japan
General Appearance of Type Material:Micro anhedral grains to 0.5 mm across, intimately intergrown with clinozoisite, diaspore and chlorite.
Place of Conservation of Type Material:Fossa Magna Museum
Geological Setting of type material:Prehnite-rich rodingite block derived from serpentinite melange. Unlike the other Sr-bearing silicates from this district, niigataite has not been found in the jadeitite boulders.
Associated Minerals at type locality:
PrehniteDiasporeClinozoisiteChlorite Group

Physical Properties of Clinozoisite-(Sr)

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:pale grey to yellowish green
Streak:white
Hardness (Mohs):5 - 5½
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Perfect
on {001}
Density (calculated):3.63 g/cm3

Crystallography of Clinozoisite-(Sr)

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Cell Parameters:a = 8.89Å, b = 5.588Å, c = 10.21Å
β = 115.12°
Ratio:a:b:c = 1.591 : 1 : 1.827
Unit Cell Volume:V 459.23 ų (Calculated from Unit Cell)
Morphology:anhedral grains
X-Ray Powder Diffraction:
d-spacingIntensity
2.90 (100)
2.79 (50)
2.70 (25)

Chemical Properties of Clinozoisite-(Sr)

Formula:
{CaSr}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Essential elements:Al, Ca, H, O, Si, Sr
All elements listed in formula:Al, Ca, H, O, Si, Sr
Empirical Formula:
(Ca
 
1.28
Sr
 
0.72
)
 
2.00
(Al
 
2.48
Fe
 
0.45
Ti
 
0.05
Mn
 
0.02
Mg
 
0.01
)
 
3.01
[HSi
 
3
O
 
13
]
Common Impurities:Fe

Relationship of Clinozoisite-(Sr) to other Species

Member of:Epidote Group
Other Members of Group:

- +
Allanite-(Ce)
{CaCe}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Allanite-(La)
{CaLa}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Allanite-(Nd)
{CaNd}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Allanite-(Y)
{CaY}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Åskagenite-(Nd)
{Mn
2+
 
Nd}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O
 
2
Clinozoisite
{Ca
 
2
}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Dissakisite-(Ce)
{CaCe}{Al
 
2
Mg}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Dissakisite-(La)
{CaLa}{Al
 
2
Mg}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Dollaseite-(Ce)
{CaCe}{MgAlMg}(Si
 
2
O
 
7
)(SiO
 
4
)(OH)F
Epidote
{Ca
 
2
}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Epidote-(Pb)
{CaPb}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Epidote-(Sr)
{CaSr}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Ferriallanite-(Ce)
{CaCe}{Fe
3+
 
AlFe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Ferriallanite-(La)
{CaLa}{Fe
3+
 
AlFe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Khristovite-(Ce)
{CaCe}{MgAlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)(OH)F
Manganiandrosite-(Ce)
{(Mn
2+
 
,Ca)(Ce,REE)}{Mn
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Manganiandrosite-(La)
{LaMn
2+
 
}{Mn
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Manganipiemontite-(Sr)
{CaSr}{Mn
3+
 
AlMn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Mukhinite
{Ca
 
2
}{Al
 
2
V
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Piemontite
{Ca
 
2
}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Piemontite-(Sr)
{CaSr}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Uedaite-(Ce)
{Mn
2+
 
Ce}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Unnamed (Ca-analogue of Manganiandrosite-(La))
{(Ca,(La,REE),Mn
2+
 
)
 
2
}{(Mn
3+
 
,Fe
3+
 
,Al)Al(Mn
2+
 
,Mg)}(Si
 
2
O
 
7
)((Si,Al,As)O
 
4
)O(OH)
Unnamed (Mg-analogue of Ferriallanite-(Ce))
{CaCe}{(Fe
3+
 
,Al)Al(Mg,Fe
2+
 
)}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Unnamed (Mn-analogue of Ferriallanite-(Ce))
{CaCe}{Fe
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Vanadoandrosite-(Ce)
{Mn
2+
 
Ce}{V
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Zoisite
{Ca
 
2
}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
Related Minerals - Nickel-Strunz Grouping):

- +
9.BG.05bAllanite-(Ce)
{CaCe}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bAllanite-(La)
{CaLa}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bAllanite-(Y)
{CaY}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05aClinozoisite
{Ca
 
2
}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bDissakisite-(Ce)
{CaCe}{Al
 
2
Mg}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Dollaseite-(Ce)
{CaCe}{MgAlMg}(Si
 
2
O
 
7
)(SiO
 
4
)(OH)F
9.BG.05aEpidote
{Ca
 
2
}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Epidote-(Pb)
{CaPb}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Khristovite-(Ce)
{CaCe}{MgAlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)(OH)F
9.BG.05Mukhinite
{Ca
 
2
}{Al
 
2
V
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Piemontite
{Ca
 
2
}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Piemontite-(Sr)
{CaSr}{Al
 
2
Mn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bManganiandrosite-(La)
{LaMn
2+
 
}{Mn
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Tawmawite
{Ca
 
2
}{(Al,Fe
3+
 
,Cr)
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Manganipiemontite-(Sr)
{CaSr}{Mn
3+
 
AlMn
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bFerriallanite-(Ce)
{CaCe}{Fe
3+
 
AlFe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Manganiandrosite-(Ce)
{(Mn
2+
 
,Ca)(Ce,REE)}{Mn
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Dissakisite-(La)
{CaLa}{Al
 
2
Mg}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Vanadoandrosite-(Ce)
{Mn
2+
 
Ce}{V
3+
 
AlMn
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Uedaite-(Ce)
{Mn
2+
 
Ce}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05Epidote-(Sr)
{CaSr}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bAllanite-(Nd)
{CaNd}{Al
 
2
Fe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bFerriallanite-(La)
{CaLa}{Fe
3+
 
AlFe
2+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.05bÅskagenite-(Nd)
{Mn
2+
 
Nd}{Al
 
2
Fe
3+
 
}(Si
 
2
O
 
7
)(SiO
 
4
)O
 
2
9.BG.10Zoisite
{Ca
 
2
}{Al
 
3
}(Si
 
2
O
 
7
)(SiO
 
4
)O(OH)
9.BG.15Macfallite
Ca
 
2
(Mn
3+
 
,Al)
 
3
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
3
9.BG.15Sursassite
Mn
2+
2
Al
 
3
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
3
9.BG.20Julgoldite-(Fe2+)
Ca
 
2
(Fe
2+
 
,Mg)(Fe
3+
 
,Al)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.BG.20Okhotskite
Ca
 
2
(Mn
2+
 
,Mg)(Mn
3+
 
,Al,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.BG.20Pumpellyite-(Fe2+)
Ca
 
2
Fe
2+
 
Al
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.BG.20Pumpellyite-(Fe3+)
Ca
 
2
(Fe
3+
 
,Mg,Fe
2+
 
)(Al,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH,O)
 
2
 · H
 
2
O
9.BG.20Pumpellyite-(Mg)
Ca
 
2
MgAl
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.BG.20Pumpellyite-(Mn2+)
Ca
 
2
(Mn
2+
 
,Mg)(Al,Mn
3+
 
,Fe
3+
 
)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.BG.20Shuiskite
Ca
 
2
(Mg,Al)(Cr,Al)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · 2H
 
2
O
9.BG.20Julgoldite-(Fe3+)
Ca
 
2
(Fe
3+
 
,Mg)(Fe
3+
 
,Al)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH,O)
 
2
 · H
 
2
O
9.BG.20Pumpellyite-(Al)
Ca
 
2
(Al,Fe
2+
 
,Mg)Al
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH,O)
 
2
 · H
 
2
O
9.BG.20Poppiite
Ca
 
2
(V
3+
 
,Fe
3+
 
,Mg)(V
3+
 
,Al)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH,O)
 
2
 · H
 
2
O
9.BG.20Julgoldite-(Mg)
Ca
 
2
(Mg,Fe
2+
 
)(Fe
3+
 
,Al)
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
 · H
 
2
O
9.BG.25Ganomalite
Pb
 
9
Ca
 
5
Mn(Si
 
2
O
 
7
)
 
4
(SiO
 
4
)O
9.BG.30Rustumite
Ca
 
10
(Si
 
2
O
 
7
)
 
2
(SiO
 
4
)(OH)
 
2
Cl
 
2
9.BG.35Vesuvianite
(Ca,Na,☐)
 
19
(Al,Mg,Fe
3+
 
)
 
13
(☐,B,Al,Fe
3+
 
)
 
5
(Si
 
2
O
 
7
)
 
4
(SiO
 
4
)
 
10
(OH,F,O)
 
10
9.BG.35Wiluite
Ca
 
19
(Al,Mg)
 
13
(B,☐,Al)
 
5
(Si
 
2
O
 
7
)
 
4
(SiO
 
4
)
 
10
(O,OH)
 
10
9.BG.35Manganvesuvianite
Ca
 
19
Mn
3+
 
(Al,Mn
3+
 
,Fe
3+
 
)
 
10
(Mg,Mn
2+
 
)
 
2
(Si
 
2
O
 
7
)
 
4
(SiO
 
4
)
 
10
O(OH)
 
9
9.BG.35Fluorvesuvianite
Ca
 
19
(Al,Mg,Fe
2+
 
)
 
13
(Si
 
2
O
 
7
)
 
4
(SiO
 
4
)
 
10
O(F,OH)
 
9
9.BG.40Vyuntspakhkite-(Y)
(Y,Yb)
 
4
Al
 
2.5-1.5
(Si,Al)
 
1.5-2.5
(SiO
 
4
)
 
4
O(OH)
 
7
9.BG.45Dellaite
Ca
 
6
(Si
 
2
O
 
7
)(SiO
 
4
)(OH)
 
2
9.BG.50Gatelite-(Ce)
CaCe
 
3
Al
 
2
(Al,Mg)(Mg,Fe
2+
 
,Al)(Si
 
2
O
 
7
)(SiO
 
4
)
 
3
(O,F)(OH,O)
 
2
9.BG.55Västmanlandite-(Ce)
Ca(Ce,La)
 
3
Al
 
2
Mg
 
2
(Si
 
2
O
 
7
)(SiO
 
4
)
 
3
(OH)
 
2
F

Other Names for Clinozoisite-(Sr)

Synonyms:
IMA2001-055Niigataite
Other Languages:
German:Niigatait
Japanese:新潟石
Russian:Клиноцоизит-(Sr)
Spanish:Niigataita

Other Information

Fluorescence in UV light:none
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 Clinozoisite-(Sr)

Reference List:

- +
H. Miyajima, S. Matsubara, R. Miyawaki, K. Hirokawa (2003): Niigataite, CaSrAl3(Si2O7)(SiO4)O(OH): Sr-analogue of clinozoisite, a new member of the epidote group from the Itoigawa-Ohmi district, Niigata Prefecture, central Japan. Journal of Mineralogy and Petrology Science, 98, 118-129.

American Mineralogist (2004): 89: 469. [Abstract].

www2.ocn.ne.jp/~miyajima/niigataite
www.city.itoigawa.niigata.jp/fmm.

Internet Links for Clinozoisite-(Sr)

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    • Localities for Clinozoisite-(Sr)

    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.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Niigata Prefecture
    		www-jm.eps.s.u-tokyo.ac.jp/2002cd-rom/pdf/j038/j038-003_e.pdf.
            • Ohmi
    		Miyajima et al. (2003) Journal of Mineralogical and Petrological Sciences, 98, 118-129.
      • Chugoku Region
        • Tottori Prefecture
    		Norimasa SHIMOBAYASHI (2004) Sr-bearing silicate minerals -itoigawaite and niigataite- in jadeitites and the related rocks from Wakasa district, Tottori Prefecture, Japan. Abstracts for the Meeting (2004) of the Mineralogical Society of Japan, k08-03
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