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Igumnovite

Formula:
Ca
 
3
Al
 
2
(SiO
 
4
)
 
2
Cl
 
4


A substance of anthropogenic origin (burning coal mine dump). Current IMA regulations do not allow such substances to be approved as valid mineral species.

Classification of Igumnovite

IMA status:Published without Approval
Explanation of status:Anthropogenic origin.
Nickel-Strunz 10th (pending) edition ID:9.HA.40

9 : SILICATES (Germanates)
H : Unclassified silicates
A : With Alkali and Alkali-earth Elements
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Chemical Properties of Igumnovite

Formula:
Ca
 
3
Al
 
2
(SiO
 
4
)
 
2
Cl
 
4
Essential elements:
All elements listed in formula:Al, Ca, Cl, O, Si

Relationship of Igumnovite to other Species

Related Minerals - Nickel-Strunz Grouping):
9.HA.05Ertixiite
Na
 
2
Si
 
4
O
 
9
9.HA.10Kenyaite
Na
 
2
Si
 
22
O
 
41
(OH)
 
8
·6H
 
2
O
9.HA.20Wawayandaite
Ca
 
6
Mn
 
2
BBe
 
9
Si
 
6
O
 
23
(OH,Cl)
 
15
9.HA.25Magbasite
KBa(Al,Sc)(Mg,Fe)
 
6
Si
 
6
O
 
20
F
 
2
9.HA.30Afanasyevaite
Ca
 
8
[Si
 
2
O
 
7
]OCl
 
2
9.HA.50Rudenkoite
Sr
 
3
(Al
 
3.5
Si
 
3.5
)O
 
10
(OH,O)
 
8
Cl
 
2
·H
 
2
O
9.HA.55Foshallasite
Ca
 
3
[Si
 
2
O
 
7
] · 3H
 
2
O(?)
9.HA.60Nagelschmidtite
Ca
 
7
[PO
 
4
|SiO
 
4
]
 
2
9.HA.65Caryochroite
(Na,Sr)
 
3
(Fe
3+
 
,Mg)
 
10
[(O,OH)
 
9
|Ti
 
2
Si
 
12
O
 
37
] ·(H
 
2
O, O, OH)
 
17
9.HA.70Juanite
Ca
 
10
Mg
 
4
Al
 
2
Si
 
11
O
 
39
·4H
 
2
O or near

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.

Internet Links for Igumnovite

Search Engines:
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  • Rare and Unusual minerals at Mineralogical Research Company
  • Fabre Minerals - search for Igumnovite specimens
  • Lapis Mineral Magazin
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  • Buy Fine Minerals from mineralsweb.com
  • The Arkenstone - Fine Minerals
  • rare and unusual minerals mainly crystallized
  • Wendel Minerals - Auktion & Shop
  • Search for Igumnovite at Thames Valley Minerals
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    Localities for Igumnovite

    (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.
    Russia
     
    • Urals Region
      • Chelyabinsk Oblast'
        • Chelyabinsk coal basin
          • Kopeisk
            • Coal mine No. 45
    		Exotic Minerals of Russia.
    Mineral and/or Locality
    Google
     
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