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Sérandite

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Formula:
Na(Mn
2+
 
,Ca)
 
2
(HSi
 
3
O
 
9
)
System:TriclinicColour:Pale pink, salmon-red, ...
Hardness:5 - 5½
Member of:Wollastonite Group
Name:Named in 1931 by Antoine François Alfred Lacroix after J.M. Sérand, lighthouse keeper of the Island of Rouma, Los, who assisted collecting the mineral and who coincidentally had a rosey pink complexion.


Pectolite-Sérandite Series. The manganese analogue of pectolite and the sodium analogue of tanohataite.

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Classification of Sérandite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/F.18-80
Nickel-Strunz 10th (pending) edition ID:9.DG.05

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
Dana 8th edition ID:65.2.1.5

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
2 : Single-Width Unbranched Chains, W=1 with chains P=3
Hey's CIM Ref.:14.18.27

14 : Silicates not Containing Aluminum
18 : Silicates of Mn and Na, K, Mg, Ca or Fe
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Type Occurrence of Sérandite

Type Locality:Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea
General Appearance of Type Material:Pink bladed mineral
Place of Conservation of Type Material:Smithsonian, Washington DC 96515
Year of Discovery:1931
Geological Setting of type material:Alkalic pegmatite
Associated Minerals at type locality:
VilliaumiteSodaliteNephelineLeucophaniteFluorite
EudialyteAstrophylliteArfvedsoniteAnalcimeAegirine

Occurrences of Sérandite

Geological Setting:In sodalite zenoliths and pegmatites, phonolite, contact metamorphic rocks.

Physical Properties of Sérandite

Lustre:Vitreous, Sub-Vitreous, Greasy
Diaphaneity (Transparency):Transparent, Translucent
Comment:Fibrous aggregates are dull to silky
Colour:Pale pink, salmon-red, salmon-orange, deep orange, rose-red, brown, colourless
Streak:White
Hardness (Mohs):5 - 5½
Tenacity:Brittle
Cleavage:Perfect
On {001} and {100}
Fracture:Irregular/Uneven, Splintery
Density (measured):3.34 g/cm3
Density (calculated):3.42 g/cm3

Crystallography of Sérandite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Space Group Setting:P1
Cell Parameters:a = 7.683(1) Å, b = 6.889(1) Å, c = 6.747(1) Å
α = 90.53(5)°, β = 94.12(2)°, γ = 102.75(2)°
Ratio:a:b:c = 1.115 : 1 : 0.979
Unit Cell Volume:V 347.29 ų (Calculated from Unit Cell)
Z:2
Morphology:Prismatic to acicular crystals
Twinning:Around [010] compostion plane {100}, less commonly contact twin on {110}
X-Ray Powder Diffraction:
d-spacingIntensity
7.51 (25)
3.158 (90)
2.983 (100)
2.838 (65)
2.602 (35)
2.495 (45)
2.192 (60)
Comments:ICDD 25-723

Optical Data of Sérandite

Type:Biaxial (+)
RI values: nα = 1.668 nβ = 1.671 nγ = 1.703
2V:Measured: 39° , Calculated: 39°
Birefringence:0.035
Maximum Birefringence:δ = 0.035

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:r < v moderate

Chemical Properties of Sérandite

Formula:
Na(Mn
2+
 
,Ca)
 
2
(HSi
 
3
O
 
9
)
Simplified for copy/paste:Na(Mn2+,Ca)2(HSi3O9)
Essential elements:H, Mn, Na, O, Si
All elements listed in formula:Ca, H, Mn, Na, O, Si
Common Impurities:Al,Fe,Mg,K,H2O

Relationship of Sérandite to other Species

Series:Forms a series with Pectolite (see here)
Member of:Wollastonite Group
Other Members of Group:

- +
Bustamite
CaMn
2+
 
(Si
 
2
O
 
6
)
Ferrobustamite
Ca(Fe
2+
 
,Ca,Mn
2+
 
)(Si
 
2
O
 
6
)
Keatingine
Pectolite
NaCa
 
2
(HSi
 
3
O
 
9
)
Tanohataite
LiMn
 
2
(HSi
 
3
O
 
9
)
Wollastonite
CaSiO
 
3
Common Associates:
SodaliteNephelineMicroclineManganoneptuniteLeucophanite
FluoriteEudialyteAstrophylliteArfvedsonite
Related Minerals - Nickel-Strunz Grouping):

- +
9.DG.05Bustamite
CaMn
2+
 
(Si
 
2
O
 
6
)
9.DG.05Ferrobustamite
Ca(Fe
2+
 
,Ca,Mn
2+
 
)(Si
 
2
O
 
6
)
9.DG.05Pectolite
NaCa
 
2
(HSi
 
3
O
 
9
)
9.DG.05Wollastonite
CaSiO
 
3
9.DG.05Wollastonite-1A
CaSiO
 
3
9.DG.07Cascandite
Ca(Sc,Fe
3+
 
)(HSi
 
3
O
 
9
)
9.DG.08Plombièrite
[Ca
 
4
Si
 
6
O
 
16
(OH)
 
2
· 2H
 
2
O]·(Ca·5H
 
2
O)
9.DG.10Clinotobermorite
[Ca
 
4
Si
 
6
O
 
17
· 2H
 
2
O]·(Ca·3H
 
2
O)
9.DG.10Riversideite
Ca
 
5
(HSi
 
3
O
 
9
)
 
2
· 2H
 
2
O
9.DG.10Tobermorite
[Ca
 
4
Si
 
6
O
 
17
· 2H
 
2
O]·(Ca·3H
 
2
O)
9.DG.15Foshagite
Ca
 
4
(Si
 
3
O
 
9
)(OH)
 
2
9.DG.20Jennite
Ca
 
9
(Si
 
3
O
 
9
)
 
2
(OH)
 
8
· 8H
 
2
O
9.DG.25Paraumbite
K
 
3
Zr
 
2
H(Si
 
3
O
 
9
)
 
2
· nH
 
2
O
9.DG.25Umbite
K
 
2
(Zr,Ti)Si
 
3
O
 
9
· H
 
2
O
9.DG.30Sørensenite
Na
 
4
SnBe
 
2
Si
 
6
O
 
16
(OH)
 
4
9.DG.35Xonotlite
Ca
 
6
(Si
 
6
O
 
17
)(OH)
 
2
9.DG.40Hillebrandite
Ca
 
2
(SiO
 
3
)(OH)
 
2
9.DG.45Zorite
Na
 
8
(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,O)
 
5
· 14H
 
2
O
9.DG.45Chivruaiite
Ca
 
4
(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,O)
 
5
· 13-14H
 
2
O
9.DG.50Haineaultite
(Na,Ca)
 
5
Ca(Ti,Nb)
 
5
(Si
 
6
O
 
17
)
 
2
(OH,F)
 
8
· 5H
 
2
O
9.DG.55Epididymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
9.DG.60Eudidymite
Na
 
2
Be
 
2
Si
 
6
O
 
15
· H
 
2
O
9.DG.65Elpidite
Na
 
2
ZrSi
 
6
O
 
15
· 3H
 
2
O
9.DG.70Fenaksite
(K,Na)
 
4
(Fe,Mn)
 
2
(Si
 
4
O
 
10
)
 
2
(OH,F)
9.DG.70Litidionite
CuNaKSi
 
4
O
 
10
9.DG.70Manaksite
KNaMnSi
 
4
O
 
10
9.DG.75Tinaksite
K
 
2
Na(Ca,Mn
2+
 
)
 
2
Ti[O|Si
 
7
O
 
18
(OH)]
9.DG.75Tokkoite
K
 
2
Ca
 
4
Si
 
7
O
 
17
(O,OH,F)
 
4
9.DG.75Senkevichite
CsKNaCa
 
2
Ti[O|Si
 
7
O
 
18
(OH)]
9.DG.80Canasite
K
 
2
Na
 
4
Ca
 
5
(Si
 
12
O
 
30
(OH,F)
 
4
9.DG.80Fluorcanasite
K
 
3
Na
 
3
Ca
 
5
Si
 
12
O
 
30
F
 
4
· H
 
2
O
9.DG.85Miserite
K(Ca,Ce)
 
4
Si
 
5
O
 
13
(OH)
 
3
9.DG.90Frankamenite
K
 
3
Na
 
3
Ca
 
5
(Si
 
12
O
 
30
)(F,OH)
 
4
· H
 
2
O
9.DG.92Charoite
(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
9.DG.95Yuksporite
(K,Ba)NaCa
 
2
(Si,Ti)
 
4
O
 
11
(F,OH) · H
 
2
O
9.DG.97Eveslogite
(Na,K,Ca,Sr,Ba)
 
48
[(Ti,Nb,Mn,Fe
2+
 
)
 
12
Si
 
48
O
 
144
(OH)
 
12
](F,OH,Cl)
 
14
Related Minerals - Hey's Index Grouping:

- +
14.18.1Nambulite
(Li,Na)Mn
 
4
Si
 
5
O
 
14
(OH)
14.18.2Natronambulite
(Na,Li)(Mn,Ca)
 
4
Si
 
5
O
 
14
OH
14.18.3Zakharovite
Na
 
4
Mn
 
5
Si
 
10
O
 
24
(OH)
 
6
· 6H
 
2
O
14.18.4Norrishite
KLiMn
3+
2
(Si
 
4
O
 
10
)O
 
2
14.18.5Shafranovskite
(Na,K)
 
6
(Mn,Fe)
 
3
Si
 
9
O
 
24
· 6H
 
2
O
14.18.6Abswurmbachite
CuMn
3+
6
(SiO
 
4
)O
 
8
14.18.7Donpeacorite
(Mn
2+
 
,Mg)Mg[SiO
 
3
]
 
2
14.18.8Kanoite
Mn
2+
 
(Mg,Mn
2+
 
)Si
 
2
O
 
6
14.18.9Caryopilite
(Mn,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
14.18.10Gonyerite
(Mn
2+
 
,Mg)
 
5
Fe
3+
 
(Fe
3+
 
Si
 
3
O
 
10
)(OH)
 
8
14.18.11Tirodite
14.18.12Manganhumite
(Mn
2+
 
,Mg)
 
7
(SiO
 
4
)
 
3
(OH)
 
2
14.18.13Bustamite
CaMn
2+
 
(Si
 
2
O
 
6
)
14.18.14Glaucochroite
CaMn
2+
 
SiO
 
4
14.18.15Truscottite
(Ca,Mn)
 
14
Si
 
24
O
 
58
(OH)
 
8
· 2H
 
2
O
14.18.16Santaclaraite
CaMn
 
4
[Si
 
5
O
 
14
OH](OH) · H
 
2
O
14.18.17Ferrobustamite
Ca(Fe
2+
 
,Ca,Mn
2+
 
)(Si
 
2
O
 
6
)
14.18.18Johannsenite
CaMn
2+
 
Si
 
2
O
 
6
14.18.19Neltnerite
CaMn
3+
6
(SiO
 
4
)O
 
8
14.18.20Orlymanite
Ca
 
4
Mn
 
3
Si
 
8
O
 
20
(OH)
 
6
· 2H
 
2
O
14.18.21Inesite
Ca
 
2
(Mn,Fe)
 
7
Si
 
10
O
 
28
(OH)
 
2
· 5H
 
2
O
14.18.22Orientite
Ca
 
2
Mn
2+
 
Mn
3+
2
(Si
 
3
O
 
10
)(OH)
 
4
14.18.23Ruizite
Ca
 
2
Mn
3+
2
[(OH)
 
2
|H
 
2
Si
 
4
O
 
13
] · 2H
 
2
O
14.18.24Bostwickite
CaMn
 
6
Si
 
3
O
 
16
· 7H
 
2
O
14.18.25Kittatinnyite
Ca
 
2
Mn
 
2
Mn(SiO
 
4
)
 
2
(OH)
 
4
· 9H
 
2
O
14.18.26Lithiomarsturite
LiCa
 
2
Mn
 
2
Si
 
5
O
 
14
(OH)
14.18.28Kvanefjeldite
Na
 
4
(Ca,Mn)(Si
 
3
O
 
7
)
 
2
(OH)
 
2
14.18.29Marsturite
NaCaMn
 
3
Si
 
5
O
 
14
(OH)
14.18.30Raite
Na
 
4
Mn
2+
3
Ti
 
0.25
Si
 
8
O
 
20
(OH)
 
2
· 10H
 
2
O
14.18.31Richterite
{Na}{CaNa}{Mg
 
5
}(Si
 
8
O
 
22
)(OH)
 
2
14.18.32Byelorussite-(Ce)
NaBa
 
2
Ce
 
2
MnTi
 
2
[Si
 
4
O
 
12
]
 
2
O
 
2
(F,OH) · H
 
2
O
14.18.33Deerite
(Fe,Mn)
 
6
(Fe,Al)
 
3
[Si
 
6
O
 
17
]O
 
3
(OH)
 
5
14.18.34Calderite
(Mn
2+
 
,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(SiO
 
4
)
 
3
14.18.35Pyroxmangite
MnSiO
 
3
14.18.36Dannemorite
14.18.37Neotocite
(Mn,Fe,Mg)SiO
 
3
· H
 
2
O
14.18.38Babingtonite
Ca
 
2
(Fe,Mn)FeSi
 
5
O
 
14
(OH)
14.18.39Manganbabingtonite
Ca
 
2
(Mn,Fe)FeSi
 
5
O
 
14
(OH)
14.18.40Örebroite
Mn
2+
3
(Sb
5+
 
,Fe
3+
 
)(SiO
 
4
)(O,OH)
 
3

Other Names for Sérandite

Other Languages:
German:Sérandit
Japanese:セラン石
Russian:Серандит
Simplified Chinese:针钠锰石
桃针钠石
Spanish:Sérandita
Traditional Chinese:針鈉錳石
桃針鈉石
Varieties:
Calcian Sérandite

Other Information

Fluorescence in UV light:Not fluorescent in UV
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 Sérandite

Reference List:

- +
LACROIX, A. (1931) Les pegmatites de la syènite sodalitique de l'Îsle Rouma (Archipel de Los, Guinèe française). Desciption d'un nouveau minéral (sérandite) qu'elles renferment. Comptes Rendu, Academie des Sciences, Paris. 192, No.4. 187 194. (in French). English abstract: American Mineralogist, 16, (1931) 344.

SCHALLER, W.T. (1955) The pectolite schizolite serandite series. American Mineralogist, 40, 1022-1031.

BOISSONNAULT, J. and PERRAULT, G. (1965a) Serandite from St. Hilaire, Quebec. Canadian Mineralogist, 8, 132 (abstract).

HORVÁTH, L. and GAULT, R.G. (1990) The mineralogy of Mont Saint Hilaire. Mineralogical Record, 21, 284-359.

HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.

Manning, P. G. (1968): Absorption spectra of the manganese-bearing chain silicates pyroxmangite, rhodonite, bustamite and serandite. Canadian Mineralogist 9, 348-357.

Ohashi, Y. & Finger, L. W. (1978): The role of octahedral cations in pyroxenoid crystal chemistry. I. Bustamite, wollastonite, and the pectolite–schizolite–serandite series. American Mineralogist 63, 274-288.

Hammer, V.M.F., Libowitzky, E., and Rossman, G.R. (1998): Single-crystal IR spectroscopy of very strong hydrogen bonds in pectolite, NaCa2[Si3O4(OH)], and serandite, NaMn2[Si3O4(OH)]. American Mineralogist 83, 569-576.

American Mineralogist (2000): 85: 745-752.

Internet Links for Sérandite

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  • Localities for Sérandite

    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.
    Australia
     
    • New South Wales
      • Darling Co.
        • Tamworth
    Min.Mag.: 60:369-374.
      • Forbes Co.
        • Grenfell
    [MinRec 27:394]
    • Queensland
      • Somerset Region
    [var: Calcian Sérandite] Carr, Phillips & Williams - Min.Mag. 1976 40,853-6
    Brazil
     
    • Santa Catarina
    1995, Geochimica Brasiliensis, 8: 179-214.; G Traversa et al (1994) Petrology and Mineral Chemistry of the Alkaline District of Lages, SC, Brazil. Geochem Brazil 8:179-214
    Canada
     
    • Québec
      • Montérégie
        • La Vallée-du-Richelieu RCM
          • Mont Saint-Hilaire
    Boissonault, J. and Perrault, G. (1965), Serandite from St. Hilaire, Quebec. Canadian Mineralogist: 8: 132. HORVÁTH, L., & GAULT, R.G. (1990) The mineralogy of Mont Saint Hilaire. Mineralogical Record, 21, 284 359.
        • Lajemmerais RCM
          • Varennes & St-Amable
    HORVÁTH, L., PFENNINGER HORVÁTH, E., GAULT, R.A., and TARASSOFF, P. (1998) Mineralogy of the Saint Amable sill, Varennes and Saint Amable, Québec, Canada. Mineralogical Record, 29, 83 118.
    Horváth, L., Pfenninger-Horváth, E., Gault, R. A., & Tarassoff, P. (1998): Mineralogy of the Saint-Amable Sill, Varennes and Saint-Amable, Québec. Mineralogical Record, 29: 83-118.
    Guinea
     
    • Los Archipelago (Los Islands)
    Lacroix, A. (1931). Les pegmatites de la syénite sodalitique de l’île Rouma (archipel de Los, Guinée française). Description d’un noveau minéral (sérandite) qu’elles renferment. C. R. Acad. Sci. Paris, 192, 189-194. ; Moreau, C., Ohnenstetter, D., Demaiffe, D., & Robineau, B. (1996). The Los Archipelago nepheline syenite ring-structure; a magmatic marker of the evolution of the Central and Equatorial Atlantic. The Canadian Mineralogist, 34(2), 281-299.
    Italy
     
    • Liguria
      • La Spezia Province
        • Vara Valley
          • Borghetto Vara
    Palenzona A., Di Giovanni F. (1990) - La serandite di Cerchiara (SP) - Rivista Mineralogica Italiaa, XIII, fasc. 1, pp. 42-43
    • Tuscany
      • Lucca Province
        • Apuan Alps
          • Vagli di Sotto
    Biagioni C., 2004. Le mineralizzazioni manganesifere dei Diaspri Auctt. di Vagli (Alpi Apuane, Lucca). Tesina di Laurea inedita, Università di Pisa.
    Japan
     
    • Honshu Island
      • Kanto Region
        • Tokyo Metropolis
          • Nishi-Tama-gun
            • Okutama-cho
    Matsubara S, Miyawaki R, Yokoyama K, Shimizu M, Imai H (2004) Tokyoite, Ba2Mn3+(VO4)2(OH), a new mineral from the Shiromaru mine, Okutama, Tokyo, Japan. Journal of Mineralogical and Petrological Sciences 99, 363-367
      • Tohoku Region
        • Akita Prefecture
          • Odate
    Dr. Wilfried Steffens: "The Eudialyte Homepage" www.koeln.netsurf.de/~w.steffens/other.htm (where it is erroneously assumed to be related to alkaline igneous rocks)
        • Iwate Prefecture
          • Shimohei-gun
    Am Min 61:3-4 pp 229-237; Mineral.Journ.Japan (1985) 12, 332-340; Matsubara, S., Miyawaki, R., Kurosawa, M., & Suzuki, Y. (2002). Potassicleakeite, a New Amphibole from the Tanohata Mine, Iwate Prefecture, Japan. Journal of mineralogical and petrological sciences, 97(4), 177-184.
    Matsubara, S., Miyawaki, R., Yokoyama, K., Shigeoka, M., Miyajima, H., Suzuki, Y., ... & Ishibashi, T. (2010). Momoiite and nagashimalite from the Tanohata mine, Iwate Prefecture, Japan. Bulletin of the National Museum of Nature and Science C, 36, 1-6.
    Namibia
     
    • Khomas Region
      • Windhoek District
        • Aris
    Ellingsen, H. V. (2006): Sérandit aus Aris, Namibia. Mineralien-Welt 17 (3), 51. (in German); Prof. Friedrich Koller, University of Vienna (chemical analyses on thin sections; pers. comm. to U. Kolitsch, 7/2009)
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
    Norway
     
    • Telemark
      • Porsgrunn
        • Bjørkedalen
    Andersen, F.,Berge, S.A. & Burvald, I. (1996): Die Mineralien des Langesundsfjords und des umgebenden Larvikit-Gebietes, Oslo-Region, Norwegen. MineralienWelt 7(4):21-100
        • Mørje
          • Sagåsen
    Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 pp
    • Vestfold
      • Larvik
        • Langesundsfjorden
          • Vesle Arøya
    Engvoldsen, T., Andersen, F., Berge, S. A. & Burvald, I. (1991): Pegmatittmineraler fra Larvik ringkompleks. STEIN 18 (1), 15-71; Larsen, A. O. (ed.) (2010): The Langesundsfjord. History, geology, pegmatites, minerals. Bode Verlag Gmbh, Salzhemmendorf, Germany, 240 pp
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
          • Lovozero Massif
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
              • Umbozero mine (Umbozerskii mine; Umba Mine)
    Lapis, 4/97, Ivanjuk et al.; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    V. Grishin collection
    Zapiski Vserossijskogo Mineralogicheskogo Obshchestva 130, issue 2, 53-58
    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. ; Arzamastsev, A., Yakovenchuk, V., Pakhomovsky, Y., & Ivanyuk, G. (2008). The Khibina and Lovozero alkaline massifs: Geology and unique mineralization. In Guidbook for 33rd International Geological Congress Excursion (No. 47, p. 58).
    I. Pekov (1998) Minerals First Discovered on the Territory of the former Soviey Union
    Mineralogical Record (2000): 31: 203.; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
            • Kedykverpakhk Mt
    I.V. Pekov et al.: Zap. Vses. Mineral. Obshch. 132(6):1-14 (2003)
            • Sengischorr Mt
              • Motchisuai River Valley
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    South Africa
     
    • North West Province
      • Bojanala Platinum District
        • Western Bushveld Complex
    The Canadian Mineralogist, V 42, 2004, pp. 1169-1178.; MITCHELL, R.H. & LIFEROVICH, R.P. (2004) Ecandrewsite - zincian pyrophanite from lujavrite. Pilansber alkaline complex, South Africa. Canadian Mineralogist), 42, 1169-1178.
    • Northern Cape Province
      • Kalahari manganese field
        • Hotazel
    Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) 279-302;
      • Postmasburg manganese field
        • Kathu
          • Sishen
    John M. Moore, Barbara K. Kuhn, Darren F. Mark, and Harilaos Tsikos (2011): A sugilite-bearing assemblage from the Wolhaarkop breccia, Bruce iron-ore mine, South Africa: Evidence for alkali metasomatism and 40Ar-39Ar dating. Eur. J. Mineral. 23, 661-673.
    USA
     
    • Arkansas
      • Pulaski Co.
        • Little Rock
    Rocks and Minerals, (1988) 63:104-125; Rocks and Minerals, (1989) 64:314-322
    Henry Barwood - unpublished (2010)
    • California
      • San Benito Co.
        • Diablo Range
          • New Idria District
            • San Benito River headwaters area
              • Dallas Gem Mine area
    Wise, W.S & Gill, R.H. (1977): Minerals of the Benitoite Gem mine. Mineralogical Record 8, 442-452; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 410.
    • New Mexico
      • Colfax Co.
        • Springer
          • Point of Rocks Mesa (Pecks Mesa)
    Rocks & Min.:60:229.
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    Updated Mineral Entry: EvansiteFrom Uwe Kolitsch, 24th Nov 2014 19:12:58