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Pinchite

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Formula:
Hg
2+
5
Cl
 
2
O
 
4
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
2+
5
Cl
 
2
O
 
4
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
+
2
)
 
3
Cl
 
3
O(OH)
3.DD.05Kadyrelite
(Hg
+
2
)
 
2
(Br,Cl)
 
2
O
3.DD.10Poyarkovite
(Hg
+
2
)
 
1.5
ClO
3.DD.15Hanawaltite
(Hg
+
2
)
 
3
Hg
2+
 
(Cl,OH)
 
2
O
 
3
3.DD.20Terlinguaite
(Hg
+
2
)
 
0.5
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)(Cl,SO
 
4
) · nH
 
2
O
3.DD.40Tedhadleyite
(Hg
+
2
)
 
5
Hg
2+
 
I
 
2
(Cl,Br)
 
2
O
 
4
3.DD.45Vasilyevite
(Hg
+
2
)
 
10
I
 
3
Br
 
2
Cl(CO
 
3
)O
 
6
3.DD.50Aurivilliusite
(Hg
+
2
)
 
0.5
Hg
2+
 
(I,Br,Cl)O
3.DD.55Terlinguacreekite
Hg
2+
3
Cl
 
2
O
 
2
3.DD.60Kelyanite
(Hg
+
2
)
 
6
Sb
3+
 
BrCl
 
2
O
 
6
3.DD.65Comancheite
Hg
2+
13
(Cl,Br)
 
8
O
 
9
Related Minerals - Hey's Index Grouping:

- +
8.5.1Simonkolleite
Zn
 
5
Cl
 
2
(OH)
 
8
· H
 
2
O
8.5.2Calomel
(Hg
+
2
)Cl
 
2
8.5.3Terlinguaite
(Hg
+
2
)
 
0.5
Hg
2+
 
ClO
8.5.4Poyarkovite
(Hg
+
2
)
 
1.5
ClO
8.5.6Eglestonite
(Hg
+
2
)
 
3
Cl
 
3
O(OH)
8.5.7Kadyrelite
(Hg
+
2
)
 
2
(Br,Cl)
 
2
O
8.5.8Comancheite
Hg
2+
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

Search Engines:
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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Pinchite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
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  • Localities for Pinchite

    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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