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Rengeite

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Formula:
Sr4ZrTi4(Si2O7)2O8
System:
Monoclinic
Colour:
Dark greenish brown
Lustre:
Adamantine
Hardness:
5 - 5½
Name:
Named for Mt. Renge and the Renge metamorphic belt where jadeitite deposits are found
Chevkinite Group.
See also strontiochevkinite and UKI-2008-(SiO:SrTiZr).

Found as a constitutent of lavender and green jade pebbles and boulders.

Classification of Rengeite

Approved 1998
9.BE.70

9 : SILICATES (Germanates)
B : Sorosilicates
E : Si2O7 groups, with additional anions; cations in octahedral [6] and greater coordination
56.2.13.5

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
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Type Occurrence of Rengeite

General Appearance of Type Material:
anhedral grains

Physical Properties of Rengeite

Adamantine
Diaphaneity (Transparency):
Transparent
Colour:
Dark greenish brown
Streak:
Pale greenish brown
Hardness (Mohs):
5 - 5½
Density:
4.12 g/cm3 (Calculated)

Crystallography of Rengeite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 13.983(10) Å, b = 5.6722(9) Å, c = 11.996(10) Å
β = 114.215(7)°
Ratio:
a:b:c = 2.465 : 1 : 2.115
Unit Cell Volume:
V 867.74 ų
Z:
2
Comment:
given as P21/a, pseudo C2/m
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.05 (vvs)
2.99 (vs)
3.12 (s)
2.84 (s)
2.74 (s)
2.20 (s)

Optical Data of Rengeite

Type:
Biaxial (+)
Dispersion:
r > v strong
Pleochroism:
Strong
Comments:
from pale geen to pale greenish brown

Chemical Properties of Rengeite

Formula:
Sr4ZrTi4(Si2O7)2O8
Essential elements:
All elements listed in formula:

Relationship of Rengeite to other Species

Other Members of Group:
Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Christofschäferite-(Ce)(Ce,La,Ca)4Mn(Ti,Fe)3(Fe,Ti)(Si2O7)2O8
Dingdaohengite-(Ce)(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8
Hezuolinite(Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8
Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8
MatsubaraiteSr4Ti5(Si2O7)2O8
Perrierite-(Ce)Ce4MgFe23+Ti2(Si2O7)2O8
Perrierite-(La)(La,Ce,Ca)4(Fe,Mn2+,Mg)Fe23+(Ti,Fe3+)2(Si2O7)2O8
Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
Strontiochevkinite(Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8
Strontium Perrierite(Ce,Sr,La,Ca)4Fe2+(Ti,Zr,Fe)2Ti2(Si2O7)2O8
9.BE.02Wadsleyite(Mg,Fe2+)2(SiO4)
9.BE.05HennomartiniteSrMn23+(Si2O7)(OH)2 · H2O
9.BE.05LawsoniteCaAl2(Si2O7)(OH)2 · H2O
9.BE.05NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
9.BE.05ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
9.BE.07IlvaiteCaFe22+Fe3+(Si2O7)O(OH)
9.BE.07ManganilvaiteCa(Mn2+,Fe2+)2Fe3+(Si2O7)O(OH)
9.BE.10SuoluniteCa2(H2Si2O7) · H2O
9.BE.12JaffeiteCa6(Si2O7)(OH)6
9.BE.15FresnoiteBa2Ti(Si2O7)O
9.BE.17BaghdaditeCa3(Zr,Ti)(Si2O7)O2
9.BE.17BurpaliteNa2CaZr(Si2O7)F2
9.BE.17CuspidineCa4(Si2O7)(F,OH)2
9.BE.17Hiortdahlite(Ca,Na)3(Zr,Ti)(Si2O7)(O,OH,F)2
9.BE.17Janhaugite(Na,Ca)3(Mn2+,Fe2+)3(Ti,Zr,Nb)2(Si2O7)2O2(OH,F)2
9.BE.17Låvenite(Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
9.BE.17Niocalite(Ca,Nb)4(Si2O7)(O,OH,F)2
9.BE.17NormanditeNaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF
9.BE.17WöhleriteNaCa2(Zr,Nb)(Si2O7)(O,OH,F)2
9.BE.17Hiortdahlite INa4Ca8Zr2(Nb,Mn,Ti,Fe,Mg,Al)2(Si2O7)4O3F5
9.BE.17MarianoiteNa2Ca4(Nb,Zr)2(Si2O7)2(O,F)4
9.BE.20Mosandrite(◻,Ca,Na)3(Ca,REE)4Ti(Si2O7)2[H2O,OH,F]4 · H2O
9.BE.20Nacareniobsite-(Ce)Na3Ca3(Ce,La,Nd)Nb(Si2O7)2OF3
9.BE.22GötzeniteNaCa4(Ca,Na)2(Si2O7)2OF3
9.BE.22HainiteNa4Ca8(Ti,Zr,Mn)3(Si2O7)4F4
9.BE.22Rosenbuschite(Ca,Na)3(Zr,Ti)(Si2O7)OF
9.BE.22Kochite(Na,Ca)3Ca2(Mn,Ca)ZrTi(Si2O7)2(F,O)4
9.BE.23DovyreniteCa6Zr(Si2O7)2(OH)4
9.BE.25Barytolamprophyllite(Ba,Na)2(Na,Ti,Fe3+)4Ti2(Si2O7)2O(OH,F)
9.BE.25EricssoniteBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25Lamprophyllite(Sr,K,Ba)2(Na,Ti,Mn2+,Fe3+)4Ti2(Si2O7)2O(O,OH,F)
9.BE.25Ericssonite-2OBaMn22+Fe3+(Si2O7)O(OH)
9.BE.25SeidozeriteNa8Mn22+Zr3Ti3(Si2O7)4O4F4
9.BE.25NabalamprophylliteNa3(Ba,Na)2Ti3(Si2O7)2O2(OH,F)2
9.BE.25Grenmarite(Na,Ca)4(Mn,Na)(Zr,Mn)2(Zr,Ti)(Si2O7)2(O,F)4
9.BE.25SchülleriteBa2Na(Mn,Ca)(Fe3+,Mg,Fe2+)2Ti2(Si2O7)2(O,F)4
9.BE.25LileyiteBa2(Na,Fe,Ca)3MgTi2(Si2O7)2O2F2
9.BE.27MurmaniteNa2Ti2(Si2O7)O2 · 2H2O
9.BE.30EpistoliteNa2(Nb,Ti)2(Si2O7)O2 · nH2O
9.BE.32LomonosoviteNa5Ti2(Si2O7)(PO4)O2
9.BE.35VuonnemiteNa11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH)
9.BE.37SoboleviteNa13Ca2Mn2Ti3(Si2O7)2(PO4)4O3F3
9.BE.40InneliteNa2CaBa4Ti3(Si2O7)2(SO4)2O4
9.BE.40PhosphoinneliteNa3Ba4Ti3(Si2O7)2(PO4,SO4)2O2F
9.BE.42YoshimuraiteBa2Mn2Ti(Si2O7)(PO4)O(OH)
9.BE.45QuadruphiteNa14Ca2Ti4(Si2O7)2(PO4)2O2F
9.BE.47PolyphiteNa5(Na4Ca2)Ti2(Si2O7)(PO4)3O2F2
9.BE.50BornemaniteNa6BaTi2Nb(Si2O7)2(PO4)O2(OH)F
9.BE.50ShkatulkaliteNa10Mn2+Ti3Nb3(Si2O7)6(OH)2F · 12H2O
9.BE.55BafertisiteBa(Fe2+,Mn2+)2Ti(Si2O7)O(F,OH)2
9.BE.55HejtmaniteBa(Mn2+,Fe2+)2Ti(Si2O7)O(OH,F)
9.BE.55Bykovaite(Ba,Na,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(H2O,F,OH)2 · 3.5H2O
9.BE.55Nechelyustovite(Ba,Sr,K)2(Na,Ti,Mn)4(Ti,Nb)2(Si2O7)2O2(O,H2O,F)2 · 4.5H2O
9.BE.60Delindeite(Na,K)2(Ba,Ca)2(Ti,Fe,Al)3(Si2O7)2O2(OH)2 · 2H2O
9.BE.65BusseniteNa2Ba2Fe2+Ti(Si2O7)(CO3)(OH)3F
9.BE.67JinshajiangiteBaNaFe42+Ti2(Si2O7)2O2(OH)2F
9.BE.67PerraultiteBaNaMn42+Ti2 (Si2O7)2O2(OH)2F
9.BE.67SurkhobiteNaCaBa2Mn8Ti4(Si2O7)4O5F5
9.BE.70Karnasurtite-(Ce)(Ce,La,Th)(Ti,Nb)(Al,Fe)(Si2O7)(OH)4 · 3H2O
9.BE.70Perrierite-(Ce)Ce4MgFe23+Ti2(Si2O7)2O8
9.BE.70Strontiochevkinite(Sr,La,Ce,Ca)4Fe2+(Ti,Zr)2Ti2(Si2O7)2O8
9.BE.70Chevkinite-(Ce)(Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
9.BE.70Polyakovite-(Ce)(Ce,Ca)4(Mg,Fe2+)(Cr3+,Fe3+)2(Ti,Nb)2(Si2O7)2O8
9.BE.70MatsubaraiteSr4Ti5(Si2O7)2O8
9.BE.70Dingdaohengite-(Ce)(Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe2+)2Ti2(Si2O7)2O8
9.BE.70Maoniupingite-(Ce)(Ce,Ca)4(Fe3+,Ti,Fe2+,◻)(Ti,Fe3+,Fe2+,Nb)4(Si2O7)2O8
9.BE.70Perrierite-(La)(La,Ce,Ca)4(Fe,Mn2+,Mg)Fe23+(Ti,Fe3+)2(Si2O7)2O8
9.BE.70UKI-2008-(SiO:SrTiZr)Sr4ZrTi4(Si2O7)2O8
9.BE.70Hezuolinite(Sr,REE)4Zr(Ti,Fe3+)4(Si2O7)2O8
9.BE.72FersmaniteCa4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
9.BE.75BelkoviteBa3(Nb,Ti)6(Si2O7)2O12
9.BE.77NasonitePb6Ca4(Si2O7)3Cl2
9.BE.80KentrolitePb2Mn23+(Si2O7)O2
9.BE.80MelanotekitePb2Fe23+(Si2O7)O2
9.BE.82TilleyiteCa5(Si2O7)(CO3)2
9.BE.85KillalaiteCa6.4(H0.6Si2O7)2(OH)2
9.BE.87Stavelotite-(La)(La,Nd,Ca)3Mn32+Cu(Mn3+,Fe3+,Mn4+)26(Si2O7)6O30
9.BE.90Biraite-(Ce)Ce2Fe2+(Si2O7)(CO3)
9.BE.92Cervandonite-(Ce)(Ce,Nd,La)(Fe3+,Fe2+,Ti,Al)3O2(Si2O7)(As3+O3)(OH)
9.BE.95BatisiviteBaV83+Ti6(Si2O7)O22

Other Names for Rengeite

Name in Other Languages:
German:Rengeit
Simplified Chinese:硅锆钛锶矿
Spanish:Rengeita

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 Rengeite

Reference List:
Miyajima H., et al. (2001): "Rengeite, a new mineral, the Sr-Zr-analogue of perrierite from the Itoigawa-Ohmi district, Niigata Prefecture, central Japan". Mineralogical Magazine 65: 111-120.

Miyawaki, R., et al.:"The crystal structure of rengeite": J. of Mineralogical and Petrological Sciences 97, 7-12 (2002)

Mashima, H., Akai, J., Nakamuta, Y., Matsubara, S. (2008): Orthorhombic polymorph of rengeite from Ohmi region, central Japan. American Mineralogist, 93, 1153-1157.

Internet Links for Rengeite

Localities for Rengeite

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.
Japan
 
  • Honshu Island
    • Chubu Region
      • Niigata Prefecture
[Min.Mag.(2001) 65, 111-120: MinRec 33:168]; Shi, G., Harlow, G. E., Wang, J., Wang, J., Ng, E., Wang, X., ... & Cui, W. (2012). Mineralogy of jadeitite and related rocks from Myanmar: a review with new data. European Journal of Mineralogy, 24(2), 345-370.
European Journal of Mineralogy (2002):1119-1128.
          • Ohmi
Miyajima et al. (2001) Mineralogical Magazine 65, 111-120.
Russia
 
  • Northern Region
    • Murmanskaja Oblast'
      • Kola Peninsula
        • Khibiny Massif
Mikhailova, Y.A., Konopleva, N.G., Yakovenchuk, V.N., Ivanyuk, G.Y., Men’shikov, Y.P., and Pakhomovsky, Y.A. (2007): Geology of Ore Deposits 49(7), 590-598.
Mineral and/or Locality  
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