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|System:||Triclinic||Colour:||Light blue, blue-green|
|Lustre:||Vitreous, Pearly||Hardness:||4 - 5|
|Name:||Named after its discovery locality, Centennial Eureka Mine, Tintic District, Utah, USA.|
This page provides mineralogical data about Utahite.
Classification of Utahite
|Strunz 8th edition ID:||4/K.15-19|
|Nickel-Strunz 10th (pending) edition ID:||7.DE.25|
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
E : With only medium-sized cations; unclassified
|Dana 7th edition ID:||220.127.116.11|
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Type Occurrence of Utahite
|Type Locality:||Centennial Eureka Mine (Blue Rock), Tintic District, East Tintic Mts, Juab Co., Utah, USA|
Physical Properties of Utahite
|Diaphaneity (Transparency):||Transparent, Translucent|
|Colour:||Light blue, blue-green|
|Hardness (Mohs):||4 - 5|
Crystallography of Utahite
Optical Data of Utahite
|RI values:||nα = 1.830 - 1.840 nβ = 1.830 - 1.900 nγ = 1.880 - 1.900|
|Maximum Birefringence:||δ = 0.050 - 0.060|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
|Surface Relief:||Very High|
Chemical Properties of Utahite
|Simplified for copy/paste:||Cu5Zn3(TeO4)4(OH)8·7H2O|
|Essential elements:||Cu, H, O, Te, Zn|
|All elements listed in formula:||Cu, H, O, Te, Zn|
Relationship of Utahite to other Species
|Related Minerals - Nickel-Strunz Grouping):|
Other Names for Utahite
|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 Utahite
Mineralogical Record (1997): 28: 175-179.
Mineralogical Record (1998): 29: 478.
Internet Links for Utahite
Localities for Utahite
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: Franklin Mine, Calaveras Co., California, USAFrom Jake Harper, 16th Apr 2014 03:23:08