Foshallasite
A discredited species name
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About Foshallasite
Formula:
Ca3[Si2O7] · 3H2O(?)
Originally described from Hackman Valley, Yukspor Mt., Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia.
Unique Identifiers
Mindat ID:
1586
Long-form identifier:
mindat:1:1:1586:4
GUID
(UUID V4):
(UUID V4):
5a9c0b53-bb85-4cf7-b3ef-93fc43cbdd21
IMA Classification of Foshallasite
Discredited
Classification of Foshallasite
9.HA.55
9 : SILICATES (Germanates)
H : Unclassified silicates
A : With Alkali and Alkali-earth Elements
9 : SILICATES (Germanates)
H : Unclassified silicates
A : With Alkali and Alkali-earth Elements
56.2.9.3
56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
56 : SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
2 : Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
14.5.22
14 : Silicates not Containing Aluminum
5 : Silicates of Ca
14 : Silicates not Containing Aluminum
5 : Silicates of Ca
Optical Data of Foshallasite
Type:
Biaxial (-)
RI values:
nα = 1.535 nβ = 1.542 nγ = 1.549
2V:
Measured: 12° to 18°, Calculated: 88°
Max Birefringence:
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v weak
Chemistry of Foshallasite
Mindat Formula:
Ca3[Si2O7] · 3H2O(?)
Elements listed:
Common Impurities:
TR,Na
Other Language Names for Foshallasite
German:Foshallasit
Spanish:Foshallasita
Related Minerals - Strunz-mindat Grouping
9.HA. | Qeltite | Ca3TiSi2(Fe3+2Si)O14 |
9.HA. | Shinichengite | Ca5[BSi2O7(OH)2]2 · 6H2O |
9.HA.05 | Ertixiite | Na2Si4O9 |
9.HA.10 | Kenyaite | Na2Si22O41(OH)8 · 6H2O |
9.HA.20 | Wawayandaite | Ca6Mn2BBe9Si6O23(OH,Cl)15 |
9.HA.25 | Magbasite | KBaFe3+Mg7Si8O22(OH)2F6 |
9.HA.35 | Demagistrisite | BaCa2Mn3+4(Si3O10)(Si2O7)(OH)4 · 3H2O |
9.HA.37 | Donwilhelmsite | CaAl4Si2O11 |
9.HA.40 | Igumnovite | Ca3Al2[SiO4]2[◻Cl4] |
9.HA.40 | Kasatkinite | Ba2Ca8B5Si8O32(OH)3 · 6H2O |
9.HA.42 | Paqueite | Ca3TiSi2(Al,Ti,Si)3O14 |
9.HA.45 | Rippite | K2(Nb,Ti)2(Si4O12)O(O,F) |
9.HA.47 | Zagamiite | CaAl2Si3.5O11 |
9.HA.50 | α-Carnegieite | NaAlSiO4 |
9.HA.50 | Rudenkoite | Sr3(Al3.5Si3.5)O10(OH,O)8Cl2 · H2O |
9.HA.52 | Atheriastite | near Ca5MgFeAl6Si8O32 · 5H2O |
9.HA.55 | Balvraidite | |
9.HA.57 | Bhreckite | Ca, Mg, Fe, Si, O, H |
9.HA.60 | Bravaisite | |
9.HA.60 | Nagelschmidtite | Ca7(SiO4)2(PO4)2 |
9.HA.65 | Caryochroite | (Na,Sr)3(Fe3+,Mg)10[Ti2Si12O37] · (H2O,O,OH)17 |
9.HA.70 | Juanite | Ca10Mg4Al2Si11O39 · 4H2O or near |
9.HA.75 | Tacharanite | Ca12Al2Si18O33 (OH)36 |
9.HA.80 | Oyelite | Ca10Si8B2O29 · 12.5H2O |
9.HA.85 | Denisovite | K14+x(Ca,Na,Mn,Fe)48[Si60O162]F16(Ox,OH4-x) · 2H2O |
9.HA.90 | Tiettaite | K4Na12Fe3+Si16O41(OH)4 · 2H2O |
Other Information
Health Risks:
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 Foshallasite
mindat.org URL:
https://www.mindat.org/min-1586.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Foshallasite
Reference List:
Localities for Foshallasite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia | |
|
Hackman Valley, Yukspor Mt, Khibiny Massif, Murmansk Oblast, Russia