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|System:||Monoclinic||Colour:||Pale pink, pinkish brown|
|Name:||Named after George Shirly Switzer (1915-2008), Curator of Minerals, US National Museum (Smithsonian Institution), Washington D.C., USA.|
|Ludlamite, Metaswitzerite, Sterlinghillite|
Switzerite rapidly and irreversibly dehydrates in air within minutes to Metaswitzerite which contains only 4 water molecules per formula unit. All "switzerites" in collections should be considered metaswitzerites, unless there is some analytical evidence to the contrary.
Classification of Switzerite
|Strunz 8th edition ID:||7/C.10-20|
|Nickel-Strunz 10th (pending) edition ID:||8.CE.25|
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
|Dana 8th edition ID:||220.127.116.11|
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
|Hey's CIM Ref.:||19.12.23|
19 : Phosphates
12 : Phosphates of Mn
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Type Occurrence of Switzerite
|Type Locality:||Foote Lithium Co. Mine (Foote Mine), Kings Mountain District, Cleveland Co., North Carolina, USA|
|Year of Discovery:||1967|
Physical Properties of Switzerite
|Diaphaneity (Transparency):||Transparent, Translucent|
|Colour:||Pale pink, pinkish brown|
Crystallography of Switzerite
|Cell Parameters:||a = 8.54Å, b = 13.16Å, c = 11.87Å|
β = 110.12°
|Ratio:||a:b:c = 0.649 : 1 : 0.902|
|Unit Cell Volume:||V 1,252.62 Å³ (Calculated from Unit Cell)|
Optical Data of Switzerite
|RI values:||nα = 1.560 nβ = 1.574 nγ = 1.580|
|2V:||Measured: 70° , Calculated: 64°|
|Maximum Birefringence:||δ = 0.020|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Dispersion:||r > v moderate|
Chemical Properties of Switzerite
|Simplified for copy/paste:||(Mn,Fe)3(PO4)2·7H2O|
|Essential elements:||H, Mn, O, P|
|All elements listed in formula:||Fe, H, Mn, O, P|
Relationship of Switzerite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Switzerite
|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 Switzerite
American Mineralogist (1967): 52: 1595-1602.
American Mineralogist (1986): 71: 1221-1223, 1224-1228.
Internet Links for Switzerite
|Specimens:||The following Switzerite specimens are currently listed for sale on minfind.com.|
Localities for Switzerite
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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