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Palermoite

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Palermo No. 1 Mine (Palermo #1 pegmatite), Groton, Grafton Co., New Hampshire, USA
© Dick Dionne

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Formula:
(Li,Na)
 
2
(Sr,Ca)Al
 
4
[PO
 
4
]
 
4
(OH)
 
4
System:OrthorhombicLustre:Vitreous
Hardness:5½
Name:For its occurrence at the Palermo #1 Mine, North Groton, New Hampshire, USA.


Bertossaite-Palermoite Series. The strontium analogue of Bertossaite.

Classification of Palermoite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/B.28-20
Strunz 9th edition ID:8.BH.25
Nickel-Strunz 10th (pending) edition ID:8.BH.25

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
Dana 8th edition ID:41.7.1.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)7(XO4)4Zq
Hey's CIM Ref.:19.5.5

19 : Phosphates
5 : Phosphates of Sr and Ba
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Type Occurrence of Palermoite

Type Locality:Palermo No. 1 Mine (Palermo #1 pegmatite), Groton, Grafton Co., New Hampshire, USA
Year of Discovery:1952

Physical Properties of Palermoite

Lustre:Vitreous
Streak:White
Hardness (Mohs):5½

Crystallography of Palermoite

Crystal System:Orthorhombic
Cell Parameters:a = 11.55Å, b = 15.84Å, c = 7.31Å
Ratio:a:b:c = 0.729 : 1 : 0.461
Unit Cell Volume:V 1,337.38 ų (Calculated from Unit Cell)

Optical Data of Palermoite

Type:Biaxial (-)
RI values: nα = 1.627 nβ = 1.642 nγ = 1.644
2V:Measured: 20° , Calculated: 38°
Maximum Birefringence:δ = 0.017

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

Chemical Properties of Palermoite

Formula:
(Li,Na)
 
2
(Sr,Ca)Al
 
4
[PO
 
4
]
 
4
(OH)
 
4
Essential elements:Al, H, Li, O, P, Sr
All elements listed in formula:Al, Ca, H, Li, Na, O, P, Sr

Relationship of Palermoite to other Species

Series:Forms a series with Bertossaite (see here)
Related Minerals - Nickel-Strunz Grouping):
8.BH.05Thadeuite
Ca(Mg,Fe
2+
 
)
 
3
[(OH,F)|PO
 
4
]
 
2
8.BH.10Durangite
NaAl[F|AsO
 
4
]
8.BH.10Isokite
CaMg[F|PO
 
4
]
8.BH.10Lacroixite
NaAl[F|PO
 
4
]
8.BH.10Maxwellite
NaFe
3+
 
[F|AsO
 
4
]
8.BH.10Panasqueiraite
CaMg[(OH,F)|PO
 
4
]
8.BH.10Tilasite
CaMg[F|AsO
 
4
]
8.BH.15Drugmanite
Pb(Fe
3+
 
,Al)
 
2
[OH|PO
 
4
]
 
2
8.BH.20Bjarebyite
(Ba,Sr)(Mn
2+
 
,Fe
2+
 
,Mg)
 
2
Al
 
2
[OH|PO
 
4
]
 
3
8.BH.20Cirrolite
near Ca
 
3
Al
 
2
(PO
 
4
)
 
3
(OH)
 
3
8.BH.20Kulanite
Ba(Fe
2+
 
,Mn
2+
 
,Mg)
 
2
(Al,Fe
3+
 
)
 
2
[OH|PO
 
4
]
 
3
8.BH.20Penikisite
Ba(Mg,Fe
2+
 
,Ca)
 
2
Al
 
2
[OH|PO
 
4
]
 
3
8.BH.20Perloffite
Ba(Mn
2+
 
,Fe
2+
 
)
 
2
Fe
3+
2
[OH|PO
 
4
]
 
3
8.BH.20Johntomaite
BaFe
2+
2
Fe
3+
2
[OH|PO
 
4
]
 
3
8.BH.25Bertossaite
(Li,Na)
 
2
(Ca,Fe
2+
 
,Mn
2+
 
)Al
 
4
[(OH,F)|PO
 
4
]
 
4
8.BH.30Carminite
PbFe
3+
2
[OH|AsO
 
4
]
 
2
8.BH.30Sewardite
CaFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
8.BH.35Adelite
CaMg[AsO
 
4
](OH)
8.BH.35Arsendescloizite
PbZn[OH|AsO
 
4
]
8.BH.35Austinite
CaZn[OH|AsO
 
4
]
8.BH.35Cobaltaustinite
CaCo[OH|AsO
 
4
]
8.BH.35Conichalcite
CaCu[OH|AsO
 
4
]
8.BH.35Duftite
PbCu[OH|AsO
 
4
]
8.BH.35Gabrielsonite
PbFe[OH|AsO
 
4
]
8.BH.35Nickelaustinite
Ca(Ni,Zn)[OH|AsO
 
4
]
8.BH.35Tangeite
CaCu[OH|VO
 
4
]
8.BH.35Gottlobite
CaMg[OH|(VO
 
4
,AsO
 
4
)]
8.BH.40Čechite
Pb(Fe
2+
 
,Mn
2+
 
)[OH|VO
 
4
]
8.BH.40Descloizite
Pb(Zn,Cu)[OH|VO
 
4
]
8.BH.40Mottramite
Pb(Cu,Zn)[OH|VO
 
4
]
8.BH.40Pyrobelonite
PbMn
2+
 
[OH|VO
 
4
]
8.BH.45Bayldonite
Cu
 
3
Pb[OH|AsO
 
4
]
 
2
8.BH.45Vésigniéite
BaCu
 
3
[OH|VO
 
4
]
 
2
8.BH.50Paganoite
NiBi[O|AsO
 
4
]
8.BH.55Jagowerite
BaAl
 
2
[OH|PO
 
4
]
 
2
8.BH.60Attakolite
(Ca,Sr)Mn(Al,Fe)
 
4
[(OH)
 
4
|(SiO
 
4
,PO
 
4
)|(HPO
 
4
,PO
 
4
)
 
3
]
8.BH.65Leningradite
PbCu
 
3
[Cl|VO
 
4
]
 
2
Related Minerals - Hey's Index Grouping:
19.5.1Strontiowhitlockite
Sr
 
9
MgH[PO
 
4
]
 
7
19.5.2Belovite-(Ce)
NaSr
 
3
(Ce,La)[(F,OH)|(PO
 
4
)
 
3
]
19.5.3Goyazite
SrAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
19.5.4Goedkenite
(Sr,Ca)
 
2
Al[OH|(PO
 
4
)
 
2
]
19.5.6Nabaphite
NaBaPO
 
4
·9H
 
2
O
19.5.7Olgite
Ba(NaSr)
 
2
Na[PO
 
4
]
 
2
19.5.8Nastrophite
Na(Sr,Ba)PO
 
4
·9H
 
2
O
19.5.9Jagowerite
BaAl
 
2
[OH|PO
 
4
]
 
2
19.5.10Gorceixite
BaAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
19.5.11Penikisite
Ba(Mg,Fe
2+
 
,Ca)
 
2
Al
 
2
[OH|PO
 
4
]
 
3
19.5.12Curetonite
Ba
 
4
Al
 
3
Ti(PO
 
4
)
 
4
(O,OH)
 
6
19.5.13Bjarebyite
(Ba,Sr)(Mn
2+
 
,Fe
2+
 
,Mg)
 
2
Al
 
2
[OH|PO
 
4
]
 
3
19.5.14Kulanite
Ba(Fe
2+
 
,Mn
2+
 
,Mg)
 
2
(Al,Fe
3+
 
)
 
2
[OH|PO
 
4
]
 
3
19.5.15Perloffite
Ba(Mn
2+
 
,Fe
2+
 
)
 
2
Fe
3+
2
[OH|PO
 
4
]
 
3

Other Names for Palermoite

German names:
Palermoit
Russian names:
Палермоит
Spanish names:
Palermoita

Other Information

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 Palermoite

Reference List:American Mineralogist (1965): 50: 777.

American Mineralogist (1975): 60: 460-465.

Neues Jahrbuch für Mineralogie, Monatshefte (1987): 305.

Acta Mineralogica Sinica 13(4), 346-353(1993)

King, V.: Palermoite from the Palermo No.1 pegmatite, Groton, Grafton county, New Hampshire: Crystallography. Rocks & Minerals 77,173(2002)

King, V.: Palermoite from the Palermo No.1 pegmatite, Groton, Grafton county, New Hampshire: Paragenesis. Rocks & Minerals 77, 240-241(2002)

Internet Links for Palermoite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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  • Palermoite details from Handbook of Mineralogy (PDF)
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    Localities for Palermoite

    Hide Locality List
    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.
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    (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.
    China
     
    • Fujian Province
      • Nanping Prefecture
        • Zhenghe Co.
          • Nanping pegmatite field
    		Acta Min. Sinica 13,346-353(1993)
    USA
     
    • Connecticut
      • Middlesex Co.
        • East Hampton
    		Januzzi, 1976. Mineral Localities of CT and Southeastern NY State
    • Maine
      • Oxford Co.
        • Paris
    		King & Foord, 1994. Mineralogy of Maine, V. 1.
    • New Hampshire
      • Grafton Co.
        • Groton
    		Amer.Min.(1953) 38, 354
      • Rockingham Co.
    		Meyers & Stewart 1956. Geology of NH, Part III.
    Mineral and/or Locality
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