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Hulsite

Big Photo

Titovskoe B deposit, Tas-Khayakhtakh Range, Dogdo River Basin, Polar Yakutia, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia
© Pavel M. Kartashov

Show Hulsite Photos (3)
Formula:
(Fe
2+
 
,Mg)
 
2
(Fe
3+
 
,Sn)[O
 
2
|BO
 
3
]
System:MonoclinicColour:Black
Hardness:3
Name:After Alfred Hulse Brooks, American, of the U.S. Geological Survey.


The Fe2+ analogue of Magnesiohulsite.

Classification of Hulsite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/G.03-40
Nickel-Strunz 10th (pending) edition ID:6.AB.45

6 : BORATES
A : Monoborates
B : BO3, with additional anions; 1(D) + OH, etc.
Dana 8th edition ID:24.2.3.1

24 : ANHYDROUS BORATES
2 : A2BO2[XO3]
Hey's CIM Ref.:9.6.4

9 : Borates
6 : Borates of Ti, Sn and Ta
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Type Occurrence of Hulsite

Type Locality:Brooks Mountain, Seward Peninsula, Nome Borough, Alaska, USA
Year of Discovery:1908
Geological Setting of type material:Contact metamorphosed limestone.
Associated Minerals at type locality:
VesuvianiteMagnetiteGarnet GroupDiopside

Physical Properties of Hulsite

Lustre:Vitreous, Sub-Metallic
Colour:Black
Hardness (Mohs):3
Cleavage:Distinct/Good
On {110}
Density (measured):4.28 g/cm3

Crystallography of Hulsite

Crystal System:Monoclinic
Cell Parameters:a = 10.68Å, b = 3.09Å, c = 5.43Å
β = 94.15°
Ratio:a:b:c = 3.456 : 1 : 1.757
Unit Cell Volume:V 178.73 ų (Calculated from Unit Cell)
Morphology:Small, rectangular crystals. Faces uneven and dull. Tabular masses.
Twinning:On [001]. One member of the twinning rotated 120° relative to the other.

Chemical Properties of Hulsite

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

Relationship of Hulsite 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.20Warwickite
(Mg,Fe
2+
 
)
 
3
Ti[O|BO
 
3
]
 
2
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.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,OH)
6.AB.75IMA2008-060
Mg
 
2
(BO
 
3
)(OH)
6.AB.80Jacquesdietrichite
Cu
 
2
BO(OH)
 
2
(OH)
 
3
6.AB.85Painite
CaZrAl
 
9
[O
 
15
|BO
 
3
]
Related Minerals - Hey's Index Grouping:

- +
9.6.1Warwickite
(Mg,Fe
2+
 
)
 
3
Ti[O|BO
 
3
]
 
2
9.6.2Azoproite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Ti,Mg)[O
 
2
|BO
 
3
]
9.6.3Nordenskiöldine
CaSn
4+
 
[BO
 
3
]
 
2
9.6.5Magnesiohulsite
(Mg,Fe
2+
 
)
 
2
(Fe
3+
 
,Sn,Mg)[O
 
2
|BO
 
3
]
9.6.6Behierite
(Ta
5+
 
,Nb
5+
 
)[BO
 
4
]

Other Names for Hulsite

Other Languages:
German:Hulsit
Russian:Халсит
Spanish:Hulsita

Other Information

Other Information:Readily soluble in HCl and HF but less reactive in other acids.

Alters to Limonite.
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 Hulsite

Reference List:Knopf and Schaller (1908) American Journal of Science: 25: 323.

Schaller (1910) American Journal of Science: 29: 543.

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.

Vlisidid, A.C. and Schaller, W.T. (1974) The identity of paigeite with vonsenite, and chemical analysis of vonsenite, ludwigite and hulsite. Neues Jahrbuch für Mineralogie, Monatshefte 1974(3-4): 95-105.

American Mineralogist (1976): 61: 116-122.

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

Šrein, V., Hloušek, J.: Ludwigit a hulsit z Krušných hor. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1998, roč. 6, s. 243-246.

Internet Links for Hulsite

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    Localities for Hulsite

    Show Locality List (6 Items)
    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.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. Current server date and time: 29th Oct 2009 08:42:59