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|System:||Orthorhombic||Colour:||White, lilac / lavender, ...|
Szaibelyite Group. Sussexite-Szaibelyite Series. The manganese analogue of Szaibelyite.
Visit gemdat.org for gemological information about Sussexite. Currently in public beta-test.
Classification of Sussexite
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Strunz 8th edition ID:||5/H.02-20|
|Nickel-Strunz 10th (pending) edition ID:||6.BA.15|
6 : BORATES
B : Diborates
A : Neso-diborates with double triangles B2(O,OH)5; 2(2D); 2(2D) + OH, etc.
|Dana 8th edition ID:||126.96.36.199|
25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
2 : Diborates
|Hey's CIM Ref.:||9.7.4|
9 : Borates
7 : Borates of Mn
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Type Occurrence of Sussexite
|Co-type Localities:||Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA|
Hamburg Mine (Hamburg Road Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Trotter Mine (Lehigh Mine), Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
|Year of Discovery:||1868|
|Geological Setting of type material:||Hydrothermal veinlets traversing Precambrian metamorphosed Zn-Mn-Fe orebody (Franklin, NJ)|
|Associated Minerals at type locality:|
Physical Properties of Sussexite
|Lustre:||Silky, Dull, Earthy|
|Diaphaneity (Transparency):||Transparent, Translucent|
|Colour:||White, lilac / lavender, black, golden-brown; colourless in transmitted light|
|Density (measured):||3.3 g/cm3|
Crystallography of Sussexite
|Cell Parameters:||a = 10.7Å, b = 12.77Å, c = 3.25Å|
|Ratio:||a:b:c = 0.838 : 1 : 0.255|
|Unit Cell Volume:||V 444.08 Å³ (Calculated from Unit Cell)|
|Morphology:||Veinlets and masses with a felted or matted fibrous structure; also parallel-fibrous or transverse-fibrous veinlets. Chert-like masses. Microscopically observed as minute laths or flattened fibers.|
Optical Data of Sussexite
|RI values:||nα = 1.670 nβ = 1.728 nγ = 1.732|
|Maximum Birefringence:||δ = 0.062|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Dispersion:||r > v strong|
Chemical Properties of Sussexite
|Simplified for copy/paste:||Mn2+BO2(OH)|
|Essential elements:||B, H, Mn, O|
|All elements listed in formula:||B, H, Mn, O|
Relationship of Sussexite to other Species
|Series:||Forms a series with Szaibélyite (see here)|
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Sussexite
|Fluorescence in UV light:||None.|
|Other Information:||Slowly soluble in acids.|
Display Requirements from:
|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 Sussexite
Brush (1868) American Journal of Science, 2nd. series: 46, 140 and 240-243.
Penfield and Sperry (1888) American Journal of Science: 36: 323.
Poitevin and Ellsworth (1924) American Mineralogist: 9: 188.
Palache, C. (1928) American MIneralogist: 13: 323 (Bauer analysis).
Slawson (1934) American Mineralogist: 19: 575.
Schaller (1942) American Mineralogist: 27: 467.
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: 375-377.
Schweizerische mineralogische und petrographische Mitteilungen: 75 (1995): 123-133.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).
Internet Links for Sussexite
|Specimens:||The following Sussexite specimens are currently listed for sale on minfind.com.|
Localities for Sussexite
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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