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Tschernichite

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Neer Road, Goble, Columbia Co., Oregon, USA
© Saul Krotki 2002

Show Tschernichite Photos (21)
Formula:
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 4-8H
 
2
O
System:TetragonalColour:Colourless to white
Hardness:4½
Name:Named after Rudy W. Tschernich (b. 1945), Snohomish, Washington (USA), an expert on zeolitic minerals.


Zeolite Group. Faujasite Subgroup.

Classification of Tschernichite

IMA status:Approved
Strunz 8th edition ID:8/J.26-40
Nickel-Strunz 10th (pending) edition ID:9.GF.30

9 : SILICATES (Germanates)
G : Tektosilicates with zeolitic H2O; zeolite family
F : Other Rare Zeolites
Dana 7th edition ID:77.1.8.2
Dana 8th edition ID:77.1.8.2

77 : TECTOSILICATES Zeolites
1 : Zeolite group - True zeolites
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Type Occurrence of Tschernichite

Type Locality:Neer Road, Goble, Columbia Co., Oregon, USA
Year of Discovery:1991

Physical Properties of Tschernichite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colourless to white
Streak:white
Hardness (Mohs):4½
Cleavage:None Observed
Fracture:Conchoidal
Density (calculated):2.11 g/cm3

Crystallography of Tschernichite

Crystal System:Tetragonal
Class (H-M):4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:P4/mmm (P4/m 2/m 2/m)
Cell Parameters:a = 12.88Å, c = 25.02Å
Ratio:a:c = 1 : 1.943
Unit Cell Volume:V 4150.68 ų
Z:8
Crystal Atlas:
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Tschernichite - {302}, {001}
Tschernichite - Contact twin on {101}
Tschernichite - Contact twin on {302}
Tschernichite - Contact twin on {304}
Tschernichite - Multiple contact twin on {101}

About Crystal Atlas

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Optical Data of Tschernichite

Type:Uniaxial (-)
RI values: nω = 1.484 nε = 1.483
Maximum Birefringence:δ = 0.001

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate

Chemical Properties of Tschernichite

Formula:
(Ca,Na
 
2
)[Al
 
2
Si
 
4
O
 
12
] · 4-8H
 
2
O
Essential elements:Al, Ca, H, O, Si
All elements listed in formula:Al, Ca, H, Na, O, Si
Common Impurities:Fe

Relationship of Tschernichite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.GF.05Terranovaite
(Na,Ca)
 
8
(Si
 
68
Al
 
12
)O
 
160
·29H
 
2
O
9.GF.10Gottardiite
Na
 
3
Mg
 
3
Ca
 
5
Al
 
19
Si
 
117
O
 
272
·93H
 
2
O
9.GF.15Lovdarite
(Na,K,Ca)
 
4
(Be,Al)
 
2
Si
 
6
O
 
16
·4H
 
2
O
9.GF.20Gaultite
Na
 
4
Zn
 
2
Si
 
7
O
 
18
·5H
 
2
O
9.GF.25Chiavennite
CaMnBe
 
2
Si
 
5
O
 
13
(OH)
 
2
·2H
 
2
O
9.GF.35Mutinaite
Na
 
3
Ca
 
4
Si
 
85
Al
 
11
O
 
192
·60H
 
2
O
9.GF.40Tschörtnerite
Ca
 
4
(Ca,Sr,K,Ba)
 
3
Cu
 
3
[(OH)
 
2
|Al
 
3
Si
 
3
O
 
12
]
 
4
 · nH
 
2
O
9.GF.50Thornasite
(Na,K)Th,Si
 
11
(O,OH,F,Cl)
 
25
·8H
 
2
O
9.GF.55Direnzoite
NaK
 
6
MgCa
 
2
(Al
 
13
Si
 
47
O
 
120
)·36H
 
2
O
Related Minerals - Dana Grouping):

- +
77.1.8.1Bellbergite
(K,Ba,Sr)
 
2
Sr
 
2
Ca
 
2
(Ca,Na)
 
4
[Al
 
3
Si
 
3
O
 
12
]
 
6
 · 30H
 
2
O

Other Names for Tschernichite

Synonyms:
IMA1989-037
Other Languages:
German:Tschernichit
Russian:Черничит
Spanish:Tschernichita

Other Information

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 Tschernichite

Reference List:American Mineralogist (1993): 78: 822-826.

European Journal of Mineralogy (1995): 7: 1029.

New Minerals (1997), New Minerals 1990-1994.

Mineralogical Record: 30: 5-6.

Articles/Blogs about Tschernichite

Internet Links for Tschernichite

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  • Raman and XRD data at RRUFF project
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    Localities for Tschernichite

    Hide Locality List
    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.
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    (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.
    Antarctica
     
    • Eastern Antarctica
      • Victoria Land
    Costa Rica
     
    • San José Province
      • Bajo Chacones
    		Micro Probe Volume VII Number 7 Spring 1993
      • San José
    		Dana VIII
    USA
     
    • Oregon
      • Columbia Co.
        • Goble
    		Amer.Min.(1993) 78, 822-826; Micro Probe Vol. 6 No. 5 Fall 1987; Tschernich, R. (1992): Zeolites of the World, 117
    Mineral and/or Locality
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