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|System:||Monoclinic||Colour:||Colourless to white|
|Name:||From the language of the early inhabitants of the discovery area (Franklin, NJ), the Lenni Lenape Indians, "wawayanda", many or several windings, in allusion to the grossly curved and winding habit of the mineral's crystals.|
Only a very few specimens of this chemically unusual species are known.
Classification of Wawayandaite
|IMA status:||Approved 1988|
|Strunz 8th edition ID:||8/D.19-20|
|Nickel-Strunz 10th (pending) edition ID:||9.HA.20|
9 : SILICATES (Germanates)
H : Unclassified silicates
A : With Alkali and Alkali-earth Elements
|Dana 8th edition ID:||18.104.22.168|
78 : Unclassified Silicates
|Hey's CIM Ref.:||17.5.38|
17 : Silicates Containing other Anions
5 : Borosilicates
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Type Occurrence of Wawayandaite
|Type Locality:||Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA|
|Year of Discovery:||1988|
|Geological Setting of type material:||Secondary veinlets in a metamorphosed Zn-Fe-Mn orebody.|
|Associated Minerals at type locality:|
Physical Properties of Wawayandaite
|Diaphaneity (Transparency):||Transparent, Translucent, Opaque|
|Colour:||Colourless to white|
Crystallography of Wawayandaite
|Cell Parameters:||a = 15.59Å, b = 4.87Å, c = 18.69Å|
β = 101.84°
|Ratio:||a:b:c = 3.201 : 1 : 3.838|
|Unit Cell Volume:||V 1,388.82 Å³ (Calculated from Unit Cell)|
Optical Data of Wawayandaite
|RI values:||nα = 1.619 nβ = 1.631 nγ = 1.641|
|2V:||Measured: 85° , Calculated: 84°|
|Maximum Birefringence:||δ = 0.022|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Dispersion:||r < v strong|
Chemical Properties of Wawayandaite
|Essential elements:||B, Be, Ca, H, Mn, O, Si|
|All elements listed in formula:||B, Be, Ca, Cl, H, Mn, O, Si|
Relationship of Wawayandaite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Wawayandaite
|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 Wawayandaite
American Mineralogist (1990): 75: 405-408.
New Minerals (1997), New Minerals 1990-1994.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Internet Links for Wawayandaite
Localities for Wawayandaite
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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