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Perloffite

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About PerloffiteHide

07341790014947737555808.jpg
Lou Perloff
Formula:
Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3
Colour:
Brownish black, green-brown, black
Lustre:
Adamantine, Vitreous
Hardness:
5
Specific Gravity:
4.00 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 1977 by Anthony R. Kampf in honor of Louis "Lou" Perloff (December 3, 1907, New York City - January 16, 2004) American lawyer and micromounter. He assembled one of the largest collections ever of both micromounts and slides taken of those micromounts..

Classification of PerloffiteHide

Approved
8.BH.20

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.9.1.4

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)5(XO4)3Zq
19.5.15

19 : Phosphates
5 : Phosphates of Sr and Ba

Physical Properties of PerloffiteHide

Adamantine, Vitreous
Transparency:
Transparent
Colour:
Brownish black, green-brown, black
Streak:
Greenish yellow
Hardness:
Cleavage:
Perfect
on {100}
Density:
4.00 g/cm3 (Calculated)

Optical Data of PerloffiteHide

Type:
Biaxial (-)
RI values:
nα = 1.793 nβ = 1.803 nγ = 1.808
2V:
Measured: 70° to 80°, Calculated: 70°
Max Birefringence:
δ = 0.015
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r << v
Pleochroism:
Visible
Comments:
X=Z= dark greenish brown
Y= light greenish brown

Chemical Properties of PerloffiteHide

Formula:
Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3
IMA Formula:
BaMn2+2Fe3+2(PO4)3(OH)3

Crystallography of PerloffiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 9.22 Å, b = 12.42 Å, c = 4.99 Å
β = 100.39°
Ratio:
a:b:c = 0.742 : 1 : 0.402
Unit Cell V:
562.05 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals resemble spearheads, parallel and radial growths common. May be massive.

Type Occurrence of PerloffiteHide

Synonyms of PerloffiteHide

Other Language Names for PerloffiteHide

Relationship of Perloffite to other SpeciesHide

Other Members of this group:
Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.
JohntomaiteBaFe2+2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.
PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Perloffite associated with CopperCu
2 photos of Perloffite associated with Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2O
2 photos of Perloffite associated with LudlamiteFe2+3(PO4)2 · 4H2O
1 photo of Perloffite associated with CupriteCu2O
1 photo of Perloffite associated with QuartzSiO2

Related Minerals - Nickel-Strunz GroupingHide

8.BH.05ThadeuiteCa(Mg,Fe2+)3(PO4)2(OH,F)2Orth. 2 2 2 : C2 2 21
8.BH.10DurangiteNaAl(AsO4)FMon. 2/m : B2/b
8.BH.10IsokiteCaMg(PO4)FMon. 2/m : B2/b
8.BH.10LacroixiteNaAl(PO4)FMon. 2/m : B2/b
8.BH.10MaxwelliteNaFe3+(AsO4)FMon.
8.BH.10PanasqueiraiteCaMg(PO4)(OH,F)Mon.
8.BH.10TilasiteCaMg(AsO4)FMon. m : Bb
8.BH.15DrugmanitePb2(Fe3+,Al)(PO4)(PO3OH)(OH)2Mon. 2/m : P21/b
8.BH.20Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.
8.BH.20CirroliteCa3Al2(PO4)3(OH)3 (?)
8.BH.20KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.
8.BH.20PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.20JohntomaiteBaFe2+2Fe3+2(PO4)3(OH)3Mon. 2/m : P21/m
8.BH.25Bertossaite(Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4Orth.
8.BH.25Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.
8.BH.30CarminitePbFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.30SewarditeCaFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
8.BH.35AdeliteCaMg(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35CobaltaustiniteCaCo(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35ConichalciteCaCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GabrielsonitePbFe3+(As3+O3)OOrth. mm2 : Pmc21
8.BH.35NickelaustiniteCaNi(AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35TangeiteCaCu(VO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35GottlobiteCaMg(VO4,AsO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.35HermannroseiteCaCu(PO4)(OH)Orth. 2 2 2 : P21 21 21
8.BH.40ČechitePbFe2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m)
8.BH.40DescloizitePbZn(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40MottramitePbCu(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.40PyrobelonitePbMn2+(VO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BH.45BayldonitePbCu3(AsO4)2(OH)2Mon. 2/m : B2/b
8.BH.45VésigniéiteBaCu3(VO4)2(OH)2Mon. 2/m : B2/m
8.BH.50PaganoiteNiBi(AsO4)OTric. 1 : P1
8.BH.55JagoweriteBaAl2(PO4)2(OH)2Tric.
8.BH.60Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4Mon. 2/m : B2/m
8.BH.65LeningraditePbCu3(VO4)2ClOrth. mmm (2/m 2/m 2/m) : Ibam

Related Minerals - Dana Grouping (8th Ed.)Hide

41.9.1.1KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.
41.9.1.2PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m
41.9.1.3Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.5.1StrontiowhitlockiteSr9Mg(PO4)6(HPO4)Trig. 3m : R3c
19.5.2Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
19.5.3GoyaziteSrAl3(PO4)(PO3OH)(OH)6Trig. 3m (3 2/m) : R3m
19.5.4GoedkeniteSr2Al(PO4)2(OH)Mon. 2/m : P21/m
19.5.5Palermoite(Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4Orth.
19.5.6NabaphiteNaBaPO4 · 9H2OIso.
19.5.7Olgite(Sr,Ba)(Na,Sr,REE)2Na(PO4)2Trig. 3m (3 2/m) : P3m1
19.5.8NastrophiteNa(Sr,Ba)PO4 · 9H2O
19.5.9JagoweriteBaAl2(PO4)2(OH)2Tric.
19.5.10GorceixiteBaAl3(PO4)(PO3OH)(OH)6Mon. m : Bm
19.5.11PenikisiteBa(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3Mon. 2/m : P21/m
19.5.12CuretoniteBa(Al,Ti)(PO4)(OH,O)FMon. 2/m
19.5.13Bjarebyite(Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3Mon.
19.5.14KulaniteBa(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3Mon.

Other InformationHide

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 PerloffiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R. (1977) A new mineral: perloffite, the Fe3+ analogue of bjarebyite. Mineralogical Record, 8, 112-114.
Fleischer, M., Pabst, A., Mandarino, J.A., Chao, G.Y. (1977) New Mineral Names. American Mineralogist, 62, 1057-1061.
Birch & Mumme (1988) Mineralogical Magazine, 52: 408-411.
Elliott, P.; Willis, A.C. (2011): The crystal structure of perloffite. Mineral. Mag. 75, 317-325.

Internet Links for PerloffiteHide

Localities for PerloffiteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Australia
 
  • South Australia
    • Flinders Ranges
      • South Flinders Ranges
        • Wilmington
Mineralogical Magazine 63, 735-741
Canada
 
  • Manitoba
    • Cross Lake
      • North Group
ERCIT, S.T., TAIT, K.T., COOPER, M.A. ABDU, Y., BALL, N.A., ANDERSON, A.J., ČERNÝ, P. & HAWTHORNE, F.C. (2010) Manitobaite, Na16Mn2+25Al8(PO4)30, a new phosphate mineral species from Cross Lake, Manitoba, Canada. Canadian Mineralogist 48, 1455-1463.
Czech Republic
 
  • Karlovy Vary Region
    • Sokolov District
      • Horní Slavkov
        • Krásno (Schönfeld)
          • Vysoký Kámen
Jirásek J. et al. (2016): Fosfáty a doprovodné minerály z živcového lomu Vysoký kámen u Krásna, Česká republika. Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze, vol. 24, No. 1, pp. 80-94.
Germany
 
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab
        • Waidhaus
Mücke, A. (1987): Der Aufschluss, 38, 5-28.
http://www.berthold-weber.de/h_miner.htm
Portugal
 
  • Vila Real
    • Chaves
      • Vidago
Neiva, A. M. R., Silva, M. M. V. G., Antunes, I. M. H. R., & Ramos, J. M. F. (2000). Phosphate minerals of some granitic rocks associated quartz veins from northern and central Portugal.
USA
 
  • South Dakota
    • Custer Co.
      • Custer Mining District
        • Fourmile
Loomis, Tom (2011), "News from the Black Hills, South Dakota", Mineral News, to be published
    • Pennington Co.
      • Keystone Mining District
        • Glendale
Rocks & Minerals: 60: 116.
 
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