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Melonite

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Formula:
NiTe2
System:
Trigonal
Hardness:
1 - 1½
Name:
After the type locality - the Melones Mine, Calaveras County, California.

Classification of Melonite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.EA.20

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
A : M:S = 1:2 - With Cu, Ag, Au
2.12.14.1

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
3.11.22

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
11 : Sulphides etc. of Ni
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Type Occurrence of Melonite

Year of Discovery:
1868

Physical Properties of Melonite

Hardness (Mohs):
1 - 1½

Crystallography of Melonite

Crystal System:
Trigonal
Cell Parameters:
a = 3.84Å, c = 5.26Å
Ratio:
a:c = 1 : 1.37
Unit Cell Volume:
V 67.17 ų (Calculated from Unit Cell)

Chemical Properties of Melonite

Formula:
NiTe2
Essential elements:
All elements listed in formula:
Common Impurities:
Pd,Pt,Ag,Bi

Relationship of Melonite to other Species

Series:
Forms a series with Merenskyite (see here)
2.EA.05Sylvanite(Au,Ag)2Te4
2.EA.10CalaveriteAuTe2
2.EA.15KostoviteCuAuTe4
2.EA.15KrenneriteAu3AgTe8
2.EA.20BerndtiteSnS2
2.EA.20KitkaiteNiTeSe
2.EA.20Merenskyite(Pd,Pt)(Te,Bi)2
2.EA.20Moncheite(Pt,Pd)(Te,Bi)2
2.EA.20ShuangfengiteIrTe2
2.EA.20SudovikovitePtSe2
2.EA.25VerbeekitePdSe2
2.EA.30DrysdalliteMo(Se,S)2
2.EA.30JordisiteMoS2
2.EA.30MolybdeniteMoS2
2.EA.30TungsteniteWS2
3.11.1HeazlewooditeNi3S2
3.11.2Godlevskite(Ni,Fe)9S8
3.11.3MilleriteNiS
3.11.4PolydymiteNi2+Ni23+S4
3.11.5VaesiteNiS2
3.11.6ShanditeNi3Pb2S2
3.11.7DonharrisiteNi8Hg3S9
3.11.8ViolariteFe2+Ni23+S4
3.11.9Pentlandite(Fe,Ni)9S8
3.11.10Bravoite(Fe,Ni)S2
3.11.11SiegeniteCoNi2S4
3.11.12FletcheriteCu(Ni,Co)2S4
3.11.13Villamaninite(Cu,Ni,Co,Fe)S2
3.11.14Mäkineniteγ-NiSe
3.11.15Sederholmitebeta-NiSe
3.11.16TrüstedtiteNi3Se4
3.11.17WilkmaniteNi3Se4
3.11.18KulleruditeNiSe2
3.11.19Penroseite(Ni,Co,Cu)Se2
3.11.20TyrrelliteCu(Co3+,Ni3+)2Se4
3.11.21ImgreiteNiTe (?)
3.11.23KitkaiteNiTeSe
3.11.24Dienerite
3.11.25OrceliteNi5-xAs2, x ~ 0.25
3.11.26MaucheriteNi11As8
3.11.27NickelineNiAs
3.11.28RammelsbergiteNiAs2
3.11.29PararammelsbergiteNiAs2
3.11.30NickelskutteruditeNiAs3-x
3.11.31OregoniteNi2FeAs2
3.11.32Westerveldite(Fe,Ni,Co)As
3.11.33Langisite(Co,Ni)As
3.11.34GersdorffiteNiAsS
3.11.35JolliffeiteNiAsSe
3.11.36BreithauptiteNiSb
3.11.38UllmanniteNiSbS
3.11.39Willyamite(Co,Ni)SbS

Other Names for Melonite

Name in Other Languages:
German:Melonit
Simplified Chinese:碲镍矿
Spanish:Melonita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Melonite

Reference List:
Genth (1868) American Journal of Science: 45: 313.

Hillebrand, William Francis (1899), Mineralogical notes: melonite (?), coloradoite, petzite, hessite American Journal of Science, 4th. series: 8: 295-298.

Ramdohr (1937) Zbl. Min.: A: 193.

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: 341.

Canadian Mineralogist (1969): 9: 626.

Internet Links for Melonite

Specimens:
The following Melonite specimens are currently listed for sale on minfind.com.

Localities for Melonite

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.
Mineral and/or Locality  
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