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Pinchite

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Terlingua, Terlingua District, Brewster Co., Texas, USA
© 2008, JGW

Formula:
Hg
 
5
O
 
4
Cl
 
2
System:OrthorhombicColour:Dark brown, black
This page provides mineralogical data about Pinchite.

Classification of Pinchite

IMA status:Approved
Strunz 8th edition ID:3/D.06-80
Nickel-Strunz 10th (pending) edition ID:3.DD.25

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
D : With Hg
Dana 8th edition ID:10.5.3.1

10 : OXYHALIDES AND HYDROXYHALIDES
5 : Am(O,OH)pXq
Hey's CIM Ref.:8.5.5

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
5 : Halides of Zn and Hg
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Type Occurrence of Pinchite

Type Locality:Terlingua District, Brewster Co., Texas, USA
Year of Discovery:1974

Physical Properties of Pinchite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent
Colour:Dark brown, black
Streak:Red-brown

Crystallography of Pinchite

Crystal System:Orthorhombic
Cell Parameters:a = 11.61Å, b = 6.1Å, c = 11.71Å
Ratio:a:b:c = 1.903 : 1 : 1.92
Unit Cell Volume:V 829.31 ų (Calculated from Unit Cell)

Chemical Properties of Pinchite

Formula:
Hg
 
5
O
 
4
Cl
 
2
Essential elements:Cl, Hg, O
All elements listed in formula:Cl, Hg, O

Relationship of Pinchite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.DD.05Eglestonite
[Hg
1+
2
]
 
3
[O|OH|Cl
 
3
]
3.DD.05Kadyrelite
Hg
 
4
(Br,Cl)
 
2
O
3.DD.10Poyarkovite
Hg
 
3
ClO
3.DD.15Hanawaltite
Hg
 
6
Hg[Cl,(OH)]
 
2
O
 
3
3.DD.20Terlinguaite
Hg
 
2
ClO
3.DD.30Gianellaite
[Hg
 
2
N]
+
2
SO
 
4
3.DD.30Mosesite
[Hg
 
2
N]
+
 
(Cl,SO
 
4
,MoO
 
4
) · H
 
2
O
3.DD.35Kleinite
[Hg
 
2
N]
+
3
Cl
 
2
S
 
0.5
 · H
 
2
O
3.DD.40Tedhadleyite
Hg
2+
 
Hg
1+
10
O
 
4
I
 
2
(Cl,Br)
 
2
3.DD.45Vasilyevite
[Hg
1+
2
]
 
10
[O
 
6
|I
 
3
|Br
 
2
|Cl|CO
 
3
]
3.DD.50Aurivilliusite
(Hg-Hg)
2+
 
Hg
2+
2
[O|(I,Br,Cl)]
 
2
3.DD.55Terlinguacreekite
Hg
2+
3
O
 
2
Cl
 
2
3.DD.60Kelyanite
(Hg
2+
 
)
 
6
(SbO
 
6
)BrCl
 
2
3.DD.65Comancheite
Hg
 
13
(Cl,Br)
 
8
O
 
9
Related Minerals - Hey's Index Grouping:

- +
8.5.1Simonkolleite
Zn
 
5
[(OH)
 
8
|Cl
 
2
] · H
 
2
O
8.5.2Calomel
Hg
 
2
Cl
 
2
8.5.3Terlinguaite
Hg
 
2
ClO
8.5.4Poyarkovite
Hg
 
3
ClO
8.5.6Eglestonite
[Hg
1+
2
]
 
3
[O|OH|Cl
 
3
]
8.5.7Kadyrelite
Hg
 
4
(Br,Cl)
 
2
O
8.5.8Comancheite
Hg
 
13
(Cl,Br)
 
8
O
 
9
8.5.9Kuzminite
Hg
 
2
(Br,Cl)
 
2
8.5.10Moschelite
Hg
 
2
I
 
2
8.5.11Tocornalite
(Ag,Hg)I

Other Names for Pinchite

Synonyms:
IMA1973-052
Other Languages:
German:Pinchit
Russian:Пинчит
Spanish:Pinchita

Other Information

Health Warning:Contains mercury - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest.

References for Pinchite

Reference List:American Mineralogist (1976): 61: 340.

American Mineralogist (1994): 79: 1199-1203.

Internet Links for Pinchite

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    Localities for Pinchite

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    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
     
    • Texas
      • Brewster Co.
    		[Can.Min.(1974) 12, 417-418; MinRec 21:233]
    Rocks & Minerals: 66(1): 202.
    Mineral and/or Locality
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