Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Warwickite

Big Photo

Amity, Town of Warwick , Orange Co., New York, USA
© 2008, J. Weissman

Show Warwickite Photos (9)
Formula:
(Mg,Fe
2+
 
)
 
3
Ti[O|BO
 
3
]
 
2
System:OrthorhombicColour:Dark brown, grey to ...
Hardness:3 - 4
Name:Named after its discovery locality, Warwick, Orange County, New York, USA


Initially found as small, rough, prismatic crystals in white Franklin marble.

Classification of Warwickite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/G.03-10
Nickel-Strunz 10th (pending) edition ID:6.AB.20

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
Dana 8th edition ID:24.2.2.1

24 : ANHYDROUS BORATES
2 : A2BO2[XO3]
Hey's CIM Ref.:9.6.1

9 : Borates
6 : Borates of Ti, Sn and Ta
mindat.org URL:http://www.mindat.org/min-4245.html
Please feel free to link to this page.

Type Occurrence of Warwickite

Type Locality:Warwick, Town of Warwick, Orange Co., New York, USA
General Appearance of Type Material:Small dark grey to blackish prismatic crystals in white crystalline marble
Year of Discovery:1838
Geological Setting of type material:Occurs in a metamorphosed, crystalline, Precambrian marble (the Franklin Marble).
Associated Minerals at type locality:
SpinelMagnetiteIlmeniteGraphiteDiopside
Chondrodite

Physical Properties of Warwickite

Lustre:Sub-Vitreous, Pearly, Sub-Metallic, Dull
Diaphaneity (Transparency):Translucent on thin edges
Colour:Dark brown, grey to black; coppery tinge on cleavage at times; reddish brown in transmitted light
Streak:Bluish black
Hardness (Mohs):3 - 4
Tenacity:Brittle
Cleavage:Perfect
On {100}.
Fracture:Irregular/Uneven
Density (measured):3.34 - 3.36 g/cm3

Crystallography of Warwickite

Crystal System:Orthorhombic
Cell Parameters:a = 9.19Å, b = 9.35Å, c = 3.08Å
Ratio:a:b:c = 0.983 : 1 : 0.329
Unit Cell Volume:V 264.65 ų (Calculated from Unit Cell)
Morphology:Slender prismatic crystals, terminations rounded.

Optical Data of Warwickite

Type:Biaxial (+)
RI values: nα = 1.806 nβ = 1.809 nγ = 1.830
Maximum Birefringence:δ = 0.024

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:relatively strong
Pleochroism:Visible
Comments:X = Yellow brown
Y = Reddish brown
Z = Cinnamon brown

Chemical Properties of Warwickite

Formula:
(Mg,Fe
2+
 
)
 
3
Ti[O|BO
 
3
]
 
2
Essential elements:B, Mg, O, Ti
All elements listed in formula:B, Fe, Mg, O, Ti

Relationship of Warwickite to other Species

Related Minerals - Nickel-Strunz Grouping):
6.AB.05Hambergite
Be
 
2
[O|OH|BO
 
2
]
6.AB.10Berborite
Be
 
2
[(OH,F)|BO
 
3
] · H
 
2
O
6.AB.15Jeremejevite
Al
 
6
[(F,OH)
 
3
|(BO
 
3
)
 
5
]
6.AB.20Yuanfuliite
Mg(Fe
3+
 
,Fe
2+
 
,Al,Ti,Mg)[O|BO
 
3
]
6.AB.25Karlite
Mg
 
7
[(OH,Cl)
 
5
|(BO
 
3
)
 
3
]
6.AB.30Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)[O
 
2
|BO
 
3
]
6.AB.30Bonaccordite
Ni
 
2
Fe
3+
 
[O
 
2
|BO
 
3
]
6.AB.30Fredrikssonite
Mg
 
2
(Mn
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
6.AB.30Ludwigite
Mg
 
2
Fe
3+
 
[O
 
2
|BO
 
3
]
6.AB.30Vonsenite
Fe
2+
2
Fe
3+
 
[O
 
2
|BO
 
3
]
6.AB.35Pinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
[O
 
2
|BO
 
3
]
6.AB.40Blatterite
(Mn
2+
 
,Mg)
 
2
(Mn
3+
 
,Sb
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
6.AB.40Chestermanite
Mg
 
2
(Fe
3+
 
,Mn
3+
 
,Al,Sb
3+
 
)[O
 
2
|BO
 
3
]
6.AB.40Orthopinakiolite
(Mg,Mn
2+
 
)
 
2
Mn
3+
 
[O
 
2
|BO
 
3
]
6.AB.40Takéuchiite
(Mg,Mn
2+
 
)
 
2
(Mn
3+
 
,Fe
3+
 
)[O
 
2
|BO
 
3
]
6.AB.45Hulsite
(Fe
2+
 
,Mg)
 
2
(Fe
3+
 
,Sn)[O
 
2
|BO
 
3
]
6.AB.45Magnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Sn,Mg)[O
 
2
|BO
 
3
]
6.AB.45Aluminomagnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Al,Mg,Sn)[O
 
2
|BO
 
3
]
6.AB.50Fluoborite
Mg
 
3
[(F,OH)
 
3
|BO
 
3
]
6.AB.50Hydroxylborite
Mg
 
3
(BO
 
3
)(OH)
 
3
6.AB.55Shabynite
Mg
 
5
[(Cl,OH)
 
2
|(OH)
 
5
|BO
 
3
] · 4H
 
2
O
6.AB.55Wightmanite
Mg
 
5
[O|(OH)
 
5
|BO
 
3
] · 2H
 
2
O
6.AB.60Gaudefroyite
Ca
 
4
Mn
3+
2-3
[(O,OH)
 
3
|CO
 
3
|(BO
 
3
)
 
3
]
6.AB.65Sakhaite
Ca
 
12
Mg
 
4
[Cl|(OH)
 
2
|(CO
 
3
)
 
4
|(BO
 
3
)
 
7
]
6.AB.70Harkerite
Ca
 
24
Mg
 
8
Al
 
2
Si
 
8
(O,OH)
 
32
(BO
 
3
)
 
8
(CO
 
3
)
 
8
(H
 
2
O,Cl)
6.AB.75Pertsevite
Mg
 
2
BO
 
3
F
6.AB.80Jacquesdietrichite
Cu
 
2
BO(OH)
 
2
(OH)
 
3
6.AB.85Painite
ZrCaAl
 
9
[O
 
15
|BO
 
3
]
Related Minerals - Hey's Index Grouping:
9.6.2Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)[O
 
2
|BO
 
3
]
9.6.3Nordenskiöldine
CaSn
4+
 
[BO
 
3
]
 
2
9.6.4Hulsite
(Fe
2+
 
,Mg)
 
2
(Fe
3+
 
,Sn)[O
 
2
|BO
 
3
]
9.6.5Magnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Sn,Mg)[O
 
2
|BO
 
3
]
9.6.6Behierite
(Ta
5+
 
,Nb
5+
 
)[O|BO
 
3
]

Other Names for Warwickite

Synonyms:
Enceladite
German names:
Warwickit
Russian names:
Варвикит
Spanish names:
Warwickita

Other Information

Other Information:Decomposed in sulfuric acid.
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 Warwickite

Reference List:Shepard (1838), American Journal of Science: 34: 313-315.

Shepard (1839), American Journal of Science: 36: 85.

Hunt (1846) American Journal of Science: 2: 30 (as Enceladite).

Hunt (1851) American Journal of Science: 11: 352.

Des Cloizeaux, A. (1874) Manuel de minéralogie. 2 volumes and Atlas, Paris. volume 2, 1 Fasc., 208pp. (1874); 2 Fasc., pp 209-544 (1874/93): 16.

Smith (1874) American Journal of Science: 8: 432.

Lacroix (1886) Bulletin de la Société française de Minéralogie: 7: 74.

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 881.

Bradley (1909) American Journal of Science: 27: 179.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 156.

The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 96.

Takeuchi, Watanabe and Ito (1950) Acta Crystallographica: 3: 98.

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: 326-327.

American Mineralogist (1974): 59: 985-1004.

Mineralogical Magazine (1997): 61: 693-698.

Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for Warwickite

Search Engines:
  • Look for Warwickite on Google
  • Look for Warwickite images on Google
    • External Links:
  • Look for Warwickite on Webmineral
  • Look for Warwickite on Athena Mineralogy
  • Look for Warwickite on Wikipedia
  • Look for Warwickite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Warwickite in the Natural History Museum (London) online catalogue
  • Warwickite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Fine Minerals from Dan Weinrich Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Fabre Minerals - search for Warwickite specimens
  • Top quality minerals from Kristalle of California
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Wendel Minerals - Auktion & Shop
  • Buy from David K Joyce minerals
  • Lapis Mineral Magazin
  • rare and unusual minerals mainly crystallized
  • High-end worldwide specimens & outstanding customer service
  • Buy fine minerals and gemstones from Pala International
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Warwickite

    Hide Locality List
    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.
    These maps work faster with Firefox!
    (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.
    Australia
     
    • Tasmania
      • Zeehan district
        • Mt Heemskirk mineral field
    		Kwak, T.A.P., and Nicholson, M. (1988): Mineralogical Magazine 52, 713-716.
    Canada
     
    • Ontario
      • Hastings Co.
        • Bancroft District
          • Herschel Township
            • Baptiste Lake
    		Geological Survey of Canada Miscellaneous Report 39; Sabina, A.P. (1982): Some rare minerals of the Bancroft area. Mineralogical Record 13 (4), 226
    Germany
     
    • Thuringia
      • Harz Mts
        • Nordhausen
          • Ilfeld
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Japan
     
    • Honshu Island
      • Tohoku Region
        • Iwate Prefecture
          • Miyako City
            • Neichi mine
    		Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Aldan Shield
    		Schreyer et al (1998), Contributions to Mineralogy and Petrology: 133: 382-388.
    Spain
     
    • Murcia
      • Jumilla
        • La Celia
    USA
     
    • New Jersey
      • Sussex Co.
        • Hardyston Township
          • Rudeville
    		Volkert, et al. (2005)
    • New York
      • Orange Co.
        • Town of Warwick
    		The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 63.
    George Robinson & Steven Chamberlain (2007) Gazetteer of major New York State mineral localities. Rocks & Minerals, 82, #6, 472-483.
    The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 71.
    Shepard, 1838; AM:59(1974):985; The Minerals of New York City & Its Environs, New York Mineralogical Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 96.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.