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|System:||Monoclinic||Hardness:||5½ - 6|
|Name:||From the Greek for "pale" and "purplish red" in allusion to its common color.|
This page provides mineralogical data about Leucophoenicite.
Classification of Leucophoenicite
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Strunz 8th edition ID:||8/B.04-90|
|Nickel-Strunz 10th (pending) edition ID:||9.AF.60|
9 : SILICATES (Germanates)
A : Nesosilicates
F : Nesosilicates with additional anions; cations in ,  and/or only  coordination
|Dana 8th edition ID:||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  coordination only
|Hey's CIM Ref.:||14.17.6|
14 : Silicates not Containing Aluminum
17 : Silicates of Mn
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Type Occurrence of Leucophoenicite
|Co-type Localities:||Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA|
Buckwheat Pit (Southwest Opening; Buckwheat Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
|Year of Discovery:||1899|
Physical Properties of Leucophoenicite
|Hardness (Mohs):||5½ - 6|
Crystallography of Leucophoenicite
|Cell Parameters:||a = 10.84Å, b = 4.82Å, c = 11.32Å|
β = 103.93°
|Ratio:||a:b:c = 2.249 : 1 : 2.349|
|Unit Cell Volume:||V 574.06 Å³ (Calculated from Unit Cell)|
Optical Data of Leucophoenicite
|RI values:||nα = 1.751 nβ = 1.771 nγ = 1.782|
|Maximum Birefringence:||δ = 0.031|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Surface Relief:||Very High|
|Dispersion:||r < v marked|
Chemical Properties of Leucophoenicite
|Essential elements:||H, Mn, O, Si|
|All elements listed in formula:||H, Mn, O, Si|
Relationship of Leucophoenicite to other Species
|Member of:||Humite Group|
|Other Members of Group:|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Leucophoenicite
|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 Leucophoenicite
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.
American Mineralogist (1986): 71: 985.
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 Leucophoenicite
Localities for Leucophoenicite
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.
(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.
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New Locality Added: Goto deposit, Falémé River basin, Tambacounda Region, SenegalFrom David Von Bargen, 21st May 2013 19:04:41