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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

Show Revdite Photos (2)
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.

Articles/Blogs about Revdite

Internet Links for Revdite

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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.
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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.
    Canada
     
    • Québec
      • Rouville Co.
        • 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]
            • Kedykverpakhk Mt
    		Mineralogical Record: 36(4): 397-416.
    Mineral and/or Locality
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