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Revdite

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Palitra pegmatite (Palette pegmatite), Kedykverpakhk Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia
© Knut Eldjarn

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Formula:
Na
 
16
Si
 
16
O
 
27
(OH)
 
26
·28H
 
2
O
System:MonoclinicColour:Colourless, white
Hardness:2
Name:Named after its discovery locality.
This page provides mineralogical data about Revdite.

Classification of Revdite

IMA status:Approved 1979
Strunz 8th edition ID:8/H.05-40
Nickel-Strunz 10th (pending) edition ID:9.DM.30

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains
Dana 8th edition ID:74.3.6.1

74 : PHYLLOSILICATES Modulated Layers
3 : Modulated Layers with joined strips
Hey's CIM Ref.:14.1.3

14 : Silicates not Containing Aluminum
1 : Silicates of the alkali metals
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Type Occurrence of Revdite

Type Locality:Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia

Physical Properties of Revdite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent
Colour:Colourless, white
Hardness (Mohs):2
Cleavage:Perfect
Perfect on {100}, less perfect on {010}
Density (measured):1.94 g/cm3
Density (calculated):1.93 g/cm3

Crystallography of Revdite

Crystal System:Monoclinic
Class (H-M):2 - Sphenoidal
Space Group:B2 {B1 1 2} {C2} {C1 2 1}
Cell Parameters:a = 5.383Å, b = 9.972Å, c = 6.91Å
β = 96.78°
Ratio:a:b:c = 0.54 : 1 : 0.693
Unit Cell Volume:V 368.33 ų (Calculated from Unit Cell)
Z:2

Optical Data of Revdite

Type:Biaxial (-)
RI values: nα = 1.469 nβ = 1.482 nγ = 1.490
2V:Measured: 75° , Calculated: 75°
Maximum Birefringence:δ = 0.021

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

Chemical Properties of Revdite

Formula:
Na
 
16
Si
 
16
O
 
27
(OH)
 
26
·28H
 
2
O
Essential elements:H, Na, O, Si
All elements listed in formula:H, Na, O, Si
Common Impurities:K

Relationship of Revdite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.DM.05Stokesite
CaSn[Si
 
3
O
 
9
] · 2H
 
2
O
9.DM.10Calciohilairite
CaZr[SiO
 
3
]
 
3
·3H
 
2
O
9.DM.10Hilairite
Na
 
2
Zr[SiO
 
3
]
 
3
·3H
 
2
O
9.DM.10Komkovite
BaZr[Si
 
3
O
 
9
]·3H
 
2
O
9.DM.10Sazykinaite-(Y)
Na
 
5
YZr[SiO
 
3
]
 
6
 · 6H
 
2
O
9.DM.10Pyatenkoite-(Y)
Na
 
5
YTi[SiO
 
3
]
 
6
 · 6H
 
2
O
9.DM.15Gaidonnayite
Na
 
2
Zr[Si
 
3
O
 
9
]·2H
 
2
O
9.DM.15Georgechaoite
NaKZr[Si
 
3
O
 
9
]·2H
 
2
O
9.DM.20Chkalovite
Na
 
2
BeSi
 
2
O
 
6
9.DM.25Vlasovite
Na
 
2
ZrSi
 
4
O
 
11
9.DM.35Scheuchzerite
Na(Mn,Mg,Zn)
 
9
[VSi
 
9
O
 
28
(OH)](OH)
 
3
9.DM.40Terskite
Na
 
4
ZrSi
 
6
O
 
16
·2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
14.1.1Natrosilite
Na
 
2
Si
 
2
O
 
5
14.1.2Ertixiite
Na
 
2
Si
 
4
O
 
9
14.1.4Makatite
Na
 
2
Si
 
4
O
 
8
(OH)
 
2
·4H
 
2
O
14.1.5Magadiite
NaSi
 
7
O
 
13
(OH)
 
3
·3H
 
2
O
14.1.6Kenyaite
Na
 
2
Si
 
22
O
 
41
(OH)
 
8
·6H
 
2
O
14.1.7Grumantite
Na[Si
 
2
O
 
4
(OH)]·H
 
2
O
14.1.8Silinaite
NaLiSi
 
2
O
 
5
·2H
 
2
O

Other Names for Revdite

Synonyms:
IMA1979-082
Other Languages:
German:Revdit
Russian:Ревдит
Spanish:Revdita

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 Revdite

Reference List:Zap.Vses.Mineral.Obshch. 109, 565-569(1980) - American Mineralogist (1982): 67: 1076 [abstract]

American Mineralogist (1993): 78: 1112.

Internet Links for Revdite

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  • Revdite details from Handbook of Mineralogy (PDF)
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    Localities for Revdite

    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.
    (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.
    Canada
     
    • Québec
      • Montérégie
        • Rouville RCM
          • Mont Saint-Hilaire
    		No reference listed
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    		Am Min 79:1011
          • Lovozero Massif
    		[World of Stones 95:5-6, p64]; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
            • Kedykverpakhk Mt
    		Mineralogical Record: 36(4): 397-416.
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 30th Oct 2009 10:16:42