Falsterite (original) (raw)

A valid IMA mineral species

About FalsteriteHide

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Formula:

Ca2MgMn2+2Fe2+2Fe3+2Zn4(PO4)8(OH)4(H2O)14

Crystal System:

Monoclinic

Name:

Named in 2012 by Anthony Robert Kampf, Stuart J. Mills, William B. Simmons, James W. Nizamoff, and Robert W. Whitmore in honor of Alexander U. Falster [b. February 19, 1952 Wisconsin, USA], analytical technologist and specialist in granite pegmatites at the University of New Orleans, Louisiana.

Closely related to ferraioloite. Unique combination of elements.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:42463:1

4ebe9882-2c61-47dd-82aa-ea978d84c096

IMA Classification of FalsteriteHide

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Type description reference:

Kampf, A. R., Mills, S. J., Simmons, W. B., Nizamoff, J. W., Whitmore, R. W. (2012) Falsterite, Ca2MgMn2+2(Fe2+0.5Fe3+0.5)4Zn4(PO4)8(OH)4(H2O)14, a new secondary phosphate mineral from the Palermo No. 1 pegmatite, North Groton, New Hampshire. American Mineralogist, 97 (4) 496-502 doi:10.2138/am.2012.4008

Classification of FalsteriteHide

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8.CF.

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
F : With large and medium-sized cations, RO4:H2O > 1:1

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Fls	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of FalsteriteHide

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Streak:

Very pale greenish blue

Fracture:

Irregular/Uneven

Density:

2.78(3) g/cm3 (Measured) 2.837 g/cm3 (Calculated)

Optical Data of FalsteriteHide

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RI values:

_n_α = 1.575(10) _n_β = 1.600(5) _n_γ = 1.610(5)

2V:

Measured: 60° (10), Calculated: 63.8°

δ = 0.035

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Comments:

X, Z = colourless to very pale yellow, Y = blue-green; Y >> X ≈ Z.

Chemistry of FalsteriteHide

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Mindat Formula:

Ca2MgMn2+2Fe2+2Fe3+2Zn4(PO4)8(OH)4(H2O)14

Crystallography of FalsteriteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 6.3868(18) Å, b = 21.260(7) Å, c = 15.365(5) Å
β = 90.564(6)°

Ratio:

a:b:c = 0.3 : 1 : 0.723

Morphology:

Very thin plates and rectangular laths up to 0.7 mm in length. Laths are flattened on {010} and elongate along [100]; they exhibit the forms {010}, {100}, and {001}.

Twinning:

Lamellar twinning is common.

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0018881	Falsterite	Kampf A R, Mills S J, Simmons W B, Nizamoff J W, Whitmore R W (2012) Falsterite, Ca2MgMn2+2(Fe2+0.5Fe3+0.5)4Zn4(PO4)8(OH)4(H2O)14, a new secondary phosphate mineral from the Palermo No. 1 pegmatite, North Groton, New Hampshire American Mineralogist 97 496-502	2012	Palermo No. 1 pegmatite, North Groton, New Hampshire	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing	Intensity
12.865 Å	(34)
10.675 Å	(100)
4.834 Å	(12)
4.043 Å	(18)
3.220 Å	(25)
3.107 Å	(14)
2.846 Å	(19)
1.596 Å	(14)

Geological EnvironmentHide

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Type Occurrence of FalsteriteHide

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General Appearance of Type Material:

Very thin greenish-blue plates and rectangular laths up to 0.7 mm in length.

Place of Conservation of Type Material:

Natural History Museum of Los Angeles County under catalog numbers 63565, 63566, 63567, and 63568.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

Kampf, A.R., Mills, S.J., Simmons, W.B., Nizamoff, J.W., Whitmore, R.W. (2012) Falsterite, Ca2MgMn2+2(Fe2+0.5Fe3+0.5)4Zn4(PO4)8(OH)4(H2O)14, a new secondary phosphate mineral from the Palermo No. 1 pegmatite, North Groton, New Hampshire. American Mineralogist: 97: 496–502.

Synonyms of FalsteriteHide

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Other Language Names for FalsteriteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

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8.CF.	Naalasite	NaAl(AsO3OH)2 · H2O	Trig. 32 : _R_32
8.CF.	Ferraioloite	MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20	Mon.
8.CF.	Espadaite	Na4Ca3Mg2[AsO3(OH)]2[AsO2(OH)2]10 · 7H2O	Orth. m m m _(_2/_m_2/_m_2/m ) : C c c a
8.CF.	Liraite	NaCa2Mn2+2[Fe3+Fe2+]Mn2+2(PO4)6(H2O)2	Orth. m _m_2
8.CF.	Nafeasite	Na3Fe3+3(AsO3OH)6 · 3H2O	Mon. 2 : _B_2
8.CF.05	Grischunite	NaCa2Mn2+5Fe3+(AsO4)6 · 2H2O	Orth. m m m _(_2/_m_2/_m_2/m )
8.CF.05	Wicksite	NaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2O	Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
8.CF.05	Bederite	Ca2(Mn2+)4(Fe3+)2(PO4)6 · 2H2O	Orth. m m m _(_2/_m_2/_m_2/m )
8.CF.05	Tassieite	(Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe2+,Mg)2(Fe3+,Mg)2(PO4)6 · 2H2O	Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
8.CF.05	Maneckiite	(Na◻)Ca2Fe2+2(Fe3+Mg)Mn2(PO4)6 · 2H2O	Orth. m m m _(_2/_m_2/_m_2/m ) : P b c a
8.CF.10	Haigerachite	KFe3+3(PO3OH)2[PO2(OH)2]6 · 4H2O	Mon. 2/m : _B_2/b
8.CF.10	Yazganite	NaFe3+2(Mg,Mn2+)(AsO4)3 · H2O	Mon. 2/m : _B_2/b
8.CF.15	Currierite	Na4Ca3MgAl4(AsO3OH)12 · 9H2O	Hex. 622 : _P_622
8.CF.20	Ríosecoite	Ca2Mg(AsO3OH)3(H2O)2	Tric. 1 : _P_1

Fluorescence of FalsteriteHide

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Other InformationHide

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Notes:

Falsterite dissolves very easily in cold, dilute HCl.

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for FalsteriteHide

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References for FalsteriteHide

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Reference List:

Nizamoff, J., Falster, A., Simmons, W., Whitmore, R. ( (2013) The paragenesis of falsterite and nizamoffite, two new zinc-bearing secondary phosphates from the Palermo No. 1 Pegmatite, North Groton, New Hampshire. PEG 2013 Contributions to The 6th International Symposium on Granitic Pegmatites.. Bartlett, New Hampshire, USA.

Localities for FalsteriteHide

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This 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.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

USA
Maine Cumberland County Baldwin West Baldwin ⓘ Estes Quarry	Jim Nizamoff +1 other reference
New Hampshire Grafton County Groton ⓘ Palermo No. 1 Mine (TL)	Williams et al. (2011) +2 other references

Falsterite (original) (raw)

About FalsteriteHide

Unique IdentifiersHide

IMA Classification of FalsteriteHide

Classification of FalsteriteHide

Mineral SymbolsHide

Physical Properties of FalsteriteHide

Optical Data of FalsteriteHide

Chemistry of FalsteriteHide

Crystallography of FalsteriteHide

Crystal StructureHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of FalsteriteHide

Synonyms of FalsteriteHide

Other Language Names for FalsteriteHide

Common AssociatesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of FalsteriteHide

Other InformationHide

Internet Links for FalsteriteHide

References for FalsteriteHide

Localities for FalsteriteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide