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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 (2)
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
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:
9.6.1Warwickite
(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+
 
)[O|BO
 
3
]

Other Names for Hulsite

German names:
Hulsit
Russian names:
Халсит
Spanish names:
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

    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.
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    (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
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
        • Zeehan
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
            • Jáchymov (St Joachimsthal)
    		Šrein, V., Hloušek, J.: Ludwigit a hulsit z Krušných hor. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1998, roč. 6, s. 243-246.
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Polar Yakutia
          • Dogdo River Basin
            • Tas-Khayakhtakh Range
    		http://maurice.strahlen.org/yakutia/yakutia.htm
    USA
     
    • Alaska
      • Nome Borough
        • Seward Peninsula
    		American Journal of Science: 25: 323-331; 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: 326.
    Mineral and/or Locality
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