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Hazenite

Formula:
KNaMg
 
2
(PO
 
4
)
 
2
·14H
 
2
O
System:OrthorhombicColour:colourless
Hardness:2 - 2½
Name:Dr. Robert M. Hazen of the Carnegie Institute for Science Geophysical Laboratory


Struvite group.

Classification of Hazenite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID:8.CH.40

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
H : With large and medium-sized cations, RO4:H2O < 1:1
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Type Occurrence of Hazenite

Type Locality:Mono Lake, Mono Co., California, USA
General Appearance of Type Material:radiating elongated tabular or prismaticclusters or single crystals up to 0.06 x 0.12 x 0.40 mm
Geological Setting of type material:in dried-out or decomposed algae on porius calciteand aragonite
Associated Minerals at type locality:
CalciteAragonite

Physical Properties of Hazenite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:colourless
Streak:white
Hardness (Mohs):2 - 2½
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Distinct/Good
{001}
Density (measured):1.91 g/cm3
Density (calculated):1.88 g/cm3

Crystallography of Hazenite

Crystal System:Orthorhombic
Class (H-M):mm2 - Pyramidal
Cell Parameters:a = 6.9349Å, b = 25.1737Å, c = 11.2189Å
Ratio:a:b:c = 0.275 : 1 : 0.446
Unit Cell Volume:V 1,958.56 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
4.302 (100)
4.184 (22)
3.262 (20)
2.803 (32)
2.786 (43)
2.767 (51)
2.742 (48)

Chemical Properties of Hazenite

Formula:
KNaMg
 
2
(PO
 
4
)
 
2
·14H
 
2
O
All elements listed in formula:H, K, Mg, Na, O, P

Relationship of Hazenite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.CH.05Walentaite
H(Ca,Mn
2+
 
,Fe
2+
 
)Fe
3+
3
[(AsO
 
4
,PO
 
4
)]
 
4
 · 7H
 
2
O
8.CH.10Anapaite
Ca
 
2
Fe
2+
 
[PO
 
4
]
 
2
 · 4H
 
2
O
8.CH.15Picropharmacolite
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 11H
 
2
O
8.CH.20Dittmarite
NH
 
4
MgPO
 
4
·H
 
2
O
8.CH.20Niahite
(NH
 
4
)(Mn
2+
 
,Mg)[PO
 
4
] · H
 
2
O
8.CH.25Francoanellite
K
 
3
Al
 
5
[(HPO
 
4
)
 
3
|PO
 
4
]
 
2
 · 12H
 
2
O
8.CH.25Taranakite
(K,NH
 
4
)Al
 
3
(PO
 
4
)
 
3
OH·9H
 
2
O
8.CH.30Schertelite
(NH
 
4
)
 
2
MgH
 
2
(PO
 
4
)
 
2
·4H
 
2
O
8.CH.35Hannayite
(NH
 
4
)
 
2
Mg
 
3
H
 
4
(PO
 
4
)
 
4
·8H
 
2
O
8.CH.40Struvite
NH
 
4
MgPO
 
4
·6H
 
2
O
8.CH.40Struvite-(K)
KMg(PO
 
4
)·6H
 
2
O
8.CH.45Rimkorolgite
(Mg,Mn)
 
5
(Ba,Sr,Ca)(PO
 
4
)
 
4
·8H
 
2
O
8.CH.50Bakhchisaraitsevite
Na
 
2
Mg
 
5
(PO
 
4
)
 
4
·7H
 
2
O
8.CH.55Fahleite
Zn
 
5
CaFe
 
2
(AsO
 
4
)
 
6
·14H
 
2
O
8.CH.55Smolyaninovite
8.CH.55Smolianinovite
(Co,Ni,Mg,Ca)
 
3
(Fe
3+
 
,Al)
 
2
(AsO
 
4
)
 
4
·11H
 
2
O
8.CH.60Barahonaite-(Al)
(Ca,Cu,Na,Fe
3+
 
,Al)
 
12
Al
 
2
(AsO
 
4
)
 
8
(OH,Cl)
 
x
·nH
 
2
O
8.CH.60Barahonaite-(Fe)
(Ca,Cu,Na,Fe
3+
 
,Al)
 
12
Fe
3+
2
(AsO
 
4
)
 
8
(OH,Cl)
 
x
·nH
 
2
O

Other Names for Hazenite

Synonyms:
IMA2007-061
Other Languages:

Other Information

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 Hazenite

Reference List:IMA website - March 2008

Internet Links for Hazenite

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    Localities for Hazenite

    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.
    (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.
    USA
     
    • California
      • Mono Co.
    		IMA website - March 2008
    Mineral and/or Locality
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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: 20th Nov 2009 11:55:55