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Leucophoenicite

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Formula:
Mn2+7(SiO4)3(OH)2
Colour:
pink, violet-red, brownish-red to brown
Lustre:
Vitreous, Sub-Vitreous
Hardness:
5½ - 6
Specific Gravity:
3.848
Crystal System:
Monoclinic
Name:
Named in 1899 by Samuel Lewis Penfield and Charles Hyde Warren from the Greek for λευκοσ "pale" and φοινιζ "purplish red" in allusion to its common color.
Dimorph of:
This page provides mineralogical data about Leucophoenicite.


Hide all sections | Show all sections

Classification of LeucophoeniciteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.AF.60

9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination
52.3.2c.2

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
3 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
14.17.6

14 : Silicates not Containing Aluminum
17 : Silicates of Mn

Physical Properties of LeucophoeniciteHide

Vitreous, Sub-Vitreous
Transparency:
Translucent
Colour:
pink, violet-red, brownish-red to brown
Streak:
Very pale pink to white
Hardness:
5½ - 6 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
{001}, not obvious
Fracture:
Irregular/Uneven
Density:
3.848 g/cm3 (Measured)    4.01 g/cm3 (Calculated)

Optical Data of LeucophoeniciteHide

Type:
Biaxial (-)
RI values:
nα = 1.751 nβ = 1.771 nγ = 1.782
2V:
Measured: 74°
Birefringence:
0.031
Max Birefringence:
δ = 0.031
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r>v, weak
Optical Extinction:
X perpendicular to {001}
Pleochroism:
Weak
Comments:
pale red // {001}, colorless perpendicular to {001}

Chemical Properties of LeucophoeniciteHide

Formula:
Mn2+7(SiO4)3(OH)2
Common Impurities:
Fe,Mg,Zn,Ca,Na,K,H2O

Crystallography of LeucophoeniciteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 10.842 Å, b = 4.826 Å, c = 11.324 Å
β = 103.93°
Ratio:
a:b:c = 2.247 : 1 : 2.346
Unit Cell V:
575.09 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Usually granular, rod-like to platy deeply striated crystals are rare

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.23 (30)
4.36 (50)
3.94 (30)
3.61 (50)
3.27 (35)
2.967 (20)
2.877 (90)
2.741 (30)
2.684 (80)
2.620 (40)
2.486 (20)
2.441 (40)
2.413 (10)
2.365 (50)
2.284 (20)
2.204 (30)
2.060 (10)
1.973 (10)
1.8908 (10)
1.8063 (100)
1.7494 (30)
1.7079 (40)
1.7012 (40)
1.6653 (10)
1.6392 (20)
1.6167 (20)
1.5966 (20)
1.5714 (40)
1.5641 (40)
1.4732 (30)
1.4441 (20)
1.4199 (20)
1.3879 (30)
1.3449 (20)
1.3191 (20)
1.3134 (20)
1.2593 (10)
1.2258 (10)
1.2121 (30)
Comments:
ICDD 22-1168

Type Occurrence of LeucophoeniciteHide

General Appearance of Type Material:
Leucophoenicite made up the larger part of the type specimen. The mineral has a crystalline structure, vitreous luster, hardness about 5,5-6, and a light purplish-red or raspberry color

Other Language Names for LeucophoeniciteHide

Relationship of Leucophoenicite to other SpeciesHide

Other Members of this group:
JerrygibbsiteMn2+9(SiO4)4(OH)2Orth. mmm (2/m 2/m 2/m) : Pbcn
Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2Orth.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Zincite27 photos of Leucophoenicite associated with Zincite on mindat.org.
Willemite15 photos of Leucophoenicite associated with Willemite on mindat.org.
Franklinite13 photos of Leucophoenicite associated with Franklinite on mindat.org.
Pyrochroite6 photos of Leucophoenicite associated with Pyrochroite on mindat.org.
Chlorophoenicite5 photos of Leucophoenicite associated with Chlorophoenicite on mindat.org.
Calcite3 photos of Leucophoenicite associated with Calcite on mindat.org.
Manganosite3 photos of Leucophoenicite associated with Manganosite on mindat.org.
Glaucochroite2 photos of Leucophoenicite associated with Glaucochroite on mindat.org.
Gageite1 photo of Leucophoenicite associated with Gageite on mindat.org.
Copper1 photo of Leucophoenicite associated with Copper on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

9.AF.05SillimaniteAl2(SiO4)OOrth. mmm (2/m 2/m 2/m)
9.AF.10AndalusiteAl2(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.10KanonaiteMn3+Al(SiO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
9.AF.15KyaniteAl2(SiO4)OTric. 1 : P1
9.AF.20MulliteAl4+2xSi2-2xO10-xOrth. mmm (2/m 2/m 2/m) : Pbam
9.AF.20Krieselite(Al,Ga)2(GeO4)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
9.AF.23BoromulliteAl9BSi2O19Orth. mm2 : Cmc21
9.AF.25YoderiteMg(Al,Fe3+)3(SiO4)2O(OH)Mon. 2/m : P21/m
9.AF.30MagnesiostauroliteMg(Mg,Li)3(Al,Mg)18Si8O44(OH)4Mon. 2/m : B2/m
9.AF.30StauroliteFe2+2Al9Si4O23(OH)Mon. 2/m : B2/m
9.AF.30ZincostauroliteZn2Al9Si4O23(OH)Mon. 2/m : B2/m
9.AF.35TopazAl2(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.40NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.45AlleghanyiteMn2+5(SiO4)2(OH)2Mon. 2/m : P21/b
9.AF.45Chondrodite(Mg,Fe2+)5(SiO4)2(F,OH)2Mon. 2/m : P21/b
9.AF.45ReinhardbraunsiteCa5(SiO4)2(OH,F)2Mon. 2/m : P21/b
9.AF.45KumtyubeiteCa5(SiO4)2F2Mon. 2/m : P21/b
9.AF.45HydroxylchondroditeMg5(SiO4)2(OH)2Mon. 2/m : P21/b
9.AF.50Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m)
9.AF.50Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2Orth.
9.AF.50Unnamed (Ca-analogue of Humite)Ca7(SiO4)4F2Orth. mmm (2/m 2/m 2/m)
9.AF.55ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
9.AF.55SonoliteMn2+9(SiO4)4(OH)2Mon.
9.AF.55HydroxylclinohumiteMg9(SiO4)4(OH)2Mon. 2/m
9.AF.65Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2Orth.
9.AF.70JerrygibbsiteMn2+9(SiO4)4(OH)2Orth. mmm (2/m 2/m 2/m) : Pbcn
9.AF.75FranciscaniteMn2+6(V5+,☐)2(SiO4)2(O,OH)6Hex.
9.AF.75ÖrebroiteMn2+3(Sb5+,Fe3+)(SiO4)(O,OH)3Hex.
9.AF.75WeliniteMn2+6(W6+,Mg)2(SiO4)2(O,OH)6Trig. 3 : P3
9.AF.80EllenbergeriteMg6(Mg,Ti,Zr,◻)2(Al,Mg)6Si8O28(OH)10Hex.
9.AF.85Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2Mon. 2/m : B2/b
9.AF.85MagnesiochloritoidMgAl2(SiO4)O(OH)2Mon. 2/m : B2/b
9.AF.85Ottrélite(Mn2+,Fe2+,Mg)Al2(SiO4)O(OH)2Mon.
9.AF.90PoldervaartiteCaCa[SiO3(OH)](OH)Orth. mmm (2/m 2/m 2/m) : Pbca
9.AF.90OlmiiteCaMn2+[SiO3(OH)](OH)Orth. mmm (2/m 2/m 2/m) : Pbca

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

52.3.2c.1Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m)
52.3.2c.3Manganhumite(Mn2+,Mg)7(SiO4)3(OH)2Orth.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

14.17.1RhodoniteCaMn3Mn(Si5O15)Tric. 1
14.17.2TephroiteMn2+2SiO4Orth. mmm (2/m 2/m 2/m)
14.17.3BrauniteMn2+Mn3+6(SiO4)O8Tet. 4/mmm (4/m 2/m 2/m) : I41/acd
14.17.4AlleghanyiteMn2+5(SiO4)2(OH)2Mon. 2/m : P21/b
14.17.5Ribbeite(Mn2+,Mg)5(SiO4)2(OH)2Orth.
14.17.7JerrygibbsiteMn2+9(SiO4)4(OH)2Orth. mmm (2/m 2/m 2/m) : Pbcn
14.17.8BementiteMn7Si6O15(OH)8Mon.
14.17.9Parsettensite(K,Na,Ca)7.5(Mn,Mg)49Si72O168(OH)50 · nH2OMon. 2/m : B2/m
14.17.10YofortieriteMn5Si8O20(OH)2 · 8-9H2OMon. 2/m : B2/m

Fluorescence of LeucophoeniciteHide

Not fluorescent in UV

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 LeucophoeniciteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Penfield S L and Warren C H (1899): Some new minerals from the zinc mines at Franklin, N.J., and note concerning the chemical composition of ganomalite, American Journal of Science, 8, 339-353
Dana, E.S. and W.E. Ford (1909) Dana's system of mineralogy, (6th edition),
app. II, 63.
Palache, C. (1935) The Minerals of Franklin and Sterling Hill, Sussex County, New Jersey. U.S. Geol. Sur. Professional Paper 180, 103-105.
Moore, P.B. (1970) Edge-sharing silicate tetrahedra in the crystal structure of leucophoenicite. American Mineralogist, 55, 1146-1166.
Dunn, P.J., et al (1984): American Mineralogist: 69: 549.
Yu-Chyi Yau and Donald R. Peacor(1986): Jerrygibbsite-leucophoenicite mixed layering and general relations between the humite and leucophoenicite families. American Mineralogist, Volume 71, pages 985-988
Dunn, P.J., C.A. Francis, and J. Innes (1988) A mcgovernite-like mineral and leucophoenicite from the Kombat mine, Namibia. American Mineralogist, 73, 1182-1185.
Dunn, P.J.(1995): Franklin and Sterling Hill New Jersey: the world's most magnificent mineral deposits, Part3: 352-356.

Internet Links for LeucophoeniciteHide

Localities for LeucophoeniciteHide

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.
Italy
 
  • Aosta Valley
    • Valtournanche Valley
      • Valtournanche
        • Breuil-Cervinia
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp.
Japan
 
  • Honshu Island
    • Kinki region
      • Shiga prefecture
        • Gamou-gun
Hiromi Yamasaki specimen
Namibia
 
  • Otjozondjupa Region
    • Grootfontein District
      • Kombat
Dunn, P.J., Francis, C.A., and Innes, J. (1988) A mcgovernite-like mineral and leucophoenicite from the Kombat mine, Namibia. American Mineralogist: 73: 1182-1185. Dunn, P.J. (1991), Rare minerals of the Kombat Mine, Mineralogical Record: 22(6): 421-425.
Romania
 
  • Maramureș Co.
http://minerals-of-the-carpathians.eu; Udubasa, G., Hartopanu, P., Ilinca, G. (1996). The Regionally metamorphosed Fe-Mn Ore Deposit at Razoare, Preluca Mts., Romania. Romanian Journal of Mineralogy, 77, 3-20.
South Africa
 
  • 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; Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa: 208.
      • Kuruman
        • N'Chwaning Mines
Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa.
Sweden
 
  • Värmland
    • Filipstad
K:Gatedal
      • Persberg district
        • Pajsberg
Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
USA (TL)
 
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
Palache(1935):104; Dunn, P.J., et al: Am.Min.:69:546-552 (1984); Dunn(1995):Pt3:352-356.
Palache(1935):104.
FOMS Millsite Committee (1986) (circa), List of Mineral Species Found on the Franklin Mill Site, Franklin-Ogdensburg Mineralogical Society (unpublished).
Mineral and/or Locality  
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