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Chlorophoenicite

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Formula:
(Mn,Mg)3Zn2(AsO4)(OH,O)6
Colour:
Usually colorless to white, also light gray-green (natural light); pink to light purplish red (strong artificial light)
Lustre:
Sub-Vitreous, Silky
Hardness:
3 - 3½
Specific Gravity:
3.46
Crystal System:
Monoclinic
Name:
Named in 1924 by William Frederick Foshag and Robert Burns Gage from the Greek χλωρός for "green" and φοιυικος for "purple-red" in allusion to its color change from natural to artificial light.
Isostructural with:
Manganese analogue of Magnesium-Chlorophoenicite. Although the original chlorophoenicite was named because of an alexendrite-like effect, the color change under various light sources was observed on rarely encounted prismatic crystals. The vast majority of chlorophoenicite specimens are white to colorless as well as in tiny acicular crystals and do not show color variation from daylight to incandescent light sources.


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Classification of ChlorophoeniciteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.BE.35

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
E : With only medium-sized cations, (OH, etc.):RO4 > 2:1
41.1.1.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p > 4:1
20.3.17

20 : Arsenates (also arsenates with phosphate, but without other anions)
3 : Arsenates of Zn, Cd or Hg

Physical Properties of ChlorophoeniciteHide

Sub-Vitreous, Silky
Transparency:
Transparent
Comment:
Pearly on the cleavage surfaces, but usually difficult to observe.
Colour:
Usually colorless to white, also light gray-green (natural light); pink to light purplish red (strong artificial light)
Comment:
White material common at the Sterling Mine and Franklin.
Streak:
colorless
Hardness:
3 - 3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {100}, good.
Fracture:
Splintery
Density:
3.46 g/cm3 (Measured)    

Optical Data of ChlorophoeniciteHide

Type:
Biaxial (-)
RI values:
nα = 1.682 nβ = 1.690 nγ = 1.697
2V:
Measured: 81° to 85°, Calculated: 84°
Birefringence:
0.015
Max Birefringence:
δ = 0.015
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v, relatively strong

Chemical Properties of ChlorophoeniciteHide

Formula:
(Mn,Mg)3Zn2(AsO4)(OH,O)6
IMA Formula:
(Mn,Mg,Zn)3Zn2AsO4(OH,O)6

Crystallography of ChlorophoeniciteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 22.97 Å, b = 3.28 Å, c = 7.31 Å
β = 106.18°
Ratio:
a:b:c = 7.003 : 1 : 2.229
Unit Cell V:
528.93 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Usually acicular. Crystals may be long prismatic [010] and deeply striated [010], with etched and dull terminal faces. Face {100} is relatively smooth while {h0l} faces are uneven or warped.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.87 (50)
3.71 (70)
3.11 (50)
2.99 (40)
2.64 (100)
2.43 (10)
1.822 (20)
1.758 (30)
Comments:
25-1159

Type Occurrence of ChlorophoeniciteHide

General Appearance of Type Material:
Usually in acicular, white crystals. Sometimes in somewhat rod-like crystals with an acute rhombic cross-section and definite pyramidal terminations. Rarely may be pale grayish green when crystals are rod-like.
Geological Setting of Type Material:
Secondary veinlets in massive ore in a metamorphosed Pre-cambrian sedimentary Zn-Fe-Mn deposit.
Associated Minerals at Type Locality:

Other Language Names for ChlorophoeniciteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Zincite19 photos of Chlorophoenicite associated with Zincite on mindat.org.
Hetaerolite13 photos of Chlorophoenicite associated with Hetaerolite on mindat.org.
Willemite12 photos of Chlorophoenicite associated with Willemite on mindat.org.
Hodgkinsonite11 photos of Chlorophoenicite associated with Hodgkinsonite on mindat.org.
Franklinite10 photos of Chlorophoenicite associated with Franklinite on mindat.org.
Friedelite5 photos of Chlorophoenicite associated with Friedelite on mindat.org.
Leucophoenicite5 photos of Chlorophoenicite associated with Leucophoenicite on mindat.org.
Rhodochrosite5 photos of Chlorophoenicite associated with Rhodochrosite on mindat.org.
Allactite5 photos of Chlorophoenicite associated with Allactite on mindat.org.
UM1986-10-CO:ClHMgMnZn4 photos of Chlorophoenicite associated with UM1986-10-CO:ClHMgMnZn on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.BE.05AugeliteAl2(PO4)(OH)3Mon. 2/m : B2/m
8.BE.10GrattarolaiteFe3+3(PO4)O3Trig. 3m : R3m
8.BE.15CornetiteCu3(PO4)(OH)3Orth. mmm (2/m 2/m 2/m) : Pbca
8.BE.20ClinoclaseCu3(AsO4)(OH)3Mon. 2/m : P21/b
8.BE.25ArhbariteCu2Mg(AsO4)(OH)3Tric. 1 : P1
8.BE.25GilmariteCu3(AsO4)(OH)3Tric.
8.BE.30AllactiteMn2+7(AsO4)2(OH)8Mon. 2/m : P21/b
8.BE.30FlinkiteMn2+2Mn3+(AsO4)(OH)4Orth.
8.BE.30RaadeiteMg7(PO4)2(OH)8Mon. 2/m
8.BE.30ArganditeMn7(VO4)2(OH)8Mon. 2/m : P21/m
8.BE.35Magnesiochlorophoenicite(Mg,Mn)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
8.BE.40Gerdtremmelite(Zn,Fe)(Al,Fe)2(AsO4)(OH)5Tric.
8.BE.45DixeniteCuMn2+14Fe2+(SiO4)2(As5+O4)(As3+O3)5(OH)6Trig.
8.BE.45Hematolite(Mn,Mg,Al,Fe3+)15(As5+O4)2(As3+O3)(OH)23Trig. 3 : R3
8.BE.45KraissliteZn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16Orth. 2 2 2 : C2 2 21
8.BE.45McgoverniteMn19Zn3(AsO4)3(AsO3)(SiO4)3(OH)21Trig. 3m (3 2/m)
8.BE.45Arakiite(Zn,Mn2+)(Mn2+,Mg)12(Fe3+,Al)2(As5+O4)2(As3+O3)(OH)23Mon.
8.BE.45Turtmannite(Mn,Mg)22.5Mg3-3x((V5+,As5+)O4)3(As3+O3)x(SiO4)3O5-5x(OH)20+xTrig.
8.BE.45CarlfrancisiteMn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42 Trig. 3m (3 2/m) : R3c
8.BE.50SynadelphiteMn2+9(As5+O4)2(As3+O3)(OH)9 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.BE.55Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8Orth. mmm (2/m 2/m 2/m) : Ccca
8.BE.60KoliciteMn2+7Zn4(AsO4)2(SiO4)2(OH)8Orth. mmm (2/m 2/m 2/m) : Cmca
8.BE.65Sabelliite(Cu,Zn)2Zn(AsO4,SbO4)(OH)3Trig. 3 : P3
8.BE.70JarosewichiteMn2+3Mn3+(AsO4)(OH)6Orth. 2 2 2
8.BE.75TheisiteCu5Zn5(AsO4,SbO4)2(OH)14Orth.
8.BE.80CoparsiteCu4(AsO4,VO4)O2ClOrth.
8.BE.85WaterhouseiteMn2+7(PO4)2(OH)8Mon. 2/m : P21/b

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

41.1.1.2Magnesiochlorophoenicite(Mg,Mn)3Zn2(AsO4)(OH,O)6Mon. 2/m : B2/m
41.1.1.3JarosewichiteMn2+3Mn3+(AsO4)(OH)6Orth. 2 2 2

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.3.1AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
20.3.2ParadamiteZn2(AsO4)(OH)Tric. 1 : P1
20.3.3KoritnigiteZn(HAsO4) · H2OTric. 1 : P1
20.3.4LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
20.3.5WarikahniteZn3(AsO4)2 · 2H2OTric.
20.3.6KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
20.3.7StranskiiteZn2Cu(AsO4)2Tric. 1 : P1
20.3.8Philipsburgite(Cu,Zn)6(AsO4,PO4)2(OH)6 · H2OMon.
20.3.9AustiniteCaZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.3.10ProsperiteCa2Zn4(AsO4)4•H2O · Mon.
20.3.11GaititeCa2Zn(AsO4)2 · 2H2OTric.
20.3.12ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
20.3.13O'DanieliteNa(Zn,Mg)3H2(AsO4)3Mon. 2/m : B2/b
20.3.14JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
20.3.15Holdenite(Mn2+,Mg)6Zn3(AsO4)2(SiO4)(OH)8Orth. mmm (2/m 2/m 2/m) : Ccca
20.3.16Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric.
20.3.18LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
20.3.19Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1
20.3.20OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon.
20.3.21FahleiteCaZn5Fe3+2(AsO4)6 · 14H2OOrth.
20.3.22KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m

Fluorescence of ChlorophoeniciteHide

Not fluorescent.

Other InformationHide

Notes:
Soluble in acids.
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 ChlorophoeniciteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Foshag and Gage (1924) Journal of the Washington Academy of Science: 14: 362.
Foshag, Berman, and Gage (1927) Proceedings of the U.S. National Museum: 70: Article 20.
Palache, C. (1935) USGS Professional Paper 180: 122.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 778-780.
Dunn, Pete J. (1981): Magnesium-chlorophoenicite redefined and new data on chlorophoenicite. Canadian Mineralogist 19, 333-336.

Internet Links for ChlorophoeniciteHide

Localities for ChlorophoeniciteHide

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.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
Schnorrer-Köhler, G., Rewitzer, C., Standfuss, L. & Standfuss, K. (1988): Weitere Neufunde aus Lavrions antiken Schlacken. Lapis 13 (2), 11-14.
USA
 
  • New Jersey
    • Sussex Co.
      • Franklin Mining District
        • Franklin
          • Franklin Mine
Pat Gross
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 780; Albanese, J.S. (1967) Chlorophoenicite: Rocks & Minerals: 42: 888-889; Dunn, P.J. (1995): Part5: 665.
        • Ogdensburg
          • Sterling Hill
Palache, C. (1935) USGS Professional Paper 180:123; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 780; Dunn, P.J. (1995): Part 5: 665-666.
Franklin Mineral Museum specimens
Mineral and/or Locality  
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