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|System:||Tetragonal||Colour:||Dark brown to brownish ...|
|Hardness:||5 - 6|
|Name:||Named in 1928 by Charles Palache allusion to the water content (HYDRO) and its relationship to hetaerolite. The material was originally described as hetaerolite by William E. Ford and W. M. Bradley in 1913.|
Reinvestigation with modern methods seems desirable.
Classification of Hydrohetaerolite
|IMA status:||Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"|
|Strunz 8th edition ID:||4/B.05-50|
|Nickel-Strunz 10th (pending) edition ID:||4.BB.10|
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations
|Dana 8th edition ID:||22.214.171.124|
7 : MULTIPLE OXIDES
2 : AB2X4
|Hey's CIM Ref.:||7.5.7|
7 : Oxides and Hydroxides
5 : Oxides of Zn, Cd and Hg
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Type Occurrence of Hydrohetaerolite
|Co-type Localities:||Wolftone Mine, Carbonate Hill, Leadville, Leadville District, Lake Co., Colorado, USA|
Passaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., New Jersey, USA
|Year of Discovery:||1928|
Physical Properties of Hydrohetaerolite
|Colour:||Dark brown to brownish black|
|Hardness (Mohs):||5 - 6|
Cleavable parallel to the elongation of the fibers.
|Density (measured):||4.6 g/cm3|
Crystallography of Hydrohetaerolite
|Cell Parameters:||a = 5.73Å, c = 9Å|
|Ratio:||a:c = 1 : 1.571|
|Unit Cell Volume:||V 295.50 Å³ (Calculated from Unit Cell)|
|Morphology:||Massive, in fibrous crusts with a botryoidal surface. Fibers elongated  ?|
Optical Data of Hydrohetaerolite
|RI values:||nω = 2.260 nε = 2.100|
|Maximum Birefringence:||δ = 0.160|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Surface Relief:||Very High|
Chemical Properties of Hydrohetaerolite
|Essential elements:||H, Mn, O, Zn|
|All elements listed in formula:||H, Mn, O, Zn|
Relationship of Hydrohetaerolite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Hydrohetaerolite
|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 Hydrohetaerolite
Butler (1913), Economic Geology: 8: 8.
Ford and Bradley (1913), American Journal of Science: 35: 600 (as hetaerolite).
Palache, C. (1928), American Mineralogist: 13: 297.
Palache, C. (1935), The Minerals of Franklin and Sterling Hill, New Jersey, USGS Professional Paper 180: 53.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 717-718.
American Mineralogist (1956): 41: 268.
Meisser, N., Perseil, E.A. (1993): Schweiz. Mineral. Petr. Mitt., 73, 11-19.
Internet Links for Hydrohetaerolite
Localities for Hydrohetaerolite
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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Locality Updated: Pampa de Aroma, Negreiros, El Tamarugal Province, Tarapacá Region, ChileFrom Reynaldo Contreira, 12th Dec 2013 02:05:28