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Ellingsenite

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About EllingseniteHide

Hans Vidar Ellingsen at Herrebøkasa
Formula:
Na5Ca6Si18O38(OH)13 · 6H2O
Colour:
Colorless, White
Lustre:
Vitreous, Silky
Hardness:
4
Crystal System:
Triclinic
Name:
Named after the amateur mineralogist Dr. Ing. Hans Vidar Ellingsen (1930-2014), Oslo, Norway.
Structurally related to martinite and gyrolite.


Classification of EllingseniteHide

Approved
Approval Year:
2009

Physical Properties of EllingseniteHide

Vitreous, Silky
Transparency:
Transparent
Comment:
Silky in aggregates
Colour:
Colorless, White
Comment:
Colorless ( Separate crystals); white (aggregates)
Streak:
White
Hardness:
Cleavage:
Perfect
on (001)

Optical Data of EllingseniteHide

Type:
Biaxial (-)

Chemical Properties of EllingseniteHide

Formula:
Na5Ca6Si18O38(OH)13 · 6H2O
IMA Formula:
Na5Ca6Si18O38(OH)13 · 6H2O

Crystallography of EllingseniteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.55(3) Å, b = 9.395(8) Å, c = 16.329(3) Å
α = 100.2(1)°, β = 94.9(2)°, γ = 117.8(2)°
Ratio:
a:b:c = 1.016 : 1 : 1.738
Unit Cell V:
1,251.52 ų (Calculated from Unit Cell)
Z:
1
Morphology:
Rhomb-like crystals, flattened on[001] and elongated on [100]. Dominate forms: pinacoidal {001} and {hk0}. The crystals forms commonly sheaf-like and radiating spherulite aggregates.
Twinning:
None observed

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
15.50 (100)
4.98 (14)
4.89 (14)
4.22 (16)
3.159 (30)
3.022 (33)
2.792 (24)
1.823 (30)

Type Occurrence of EllingseniteHide

General Appearance of Type Material:
In vesicles in the phonolite
Geological Setting of Type Material:
A hydrothermally altered phonolite of the Aris alkaline complex
Associated Minerals at Type Locality:

Synonyms of EllingseniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Villiaumite22 photos of Ellingsenite associated with Villiaumite on mindat.org.
Aegirine18 photos of Ellingsenite associated with Aegirine on mindat.org.
Tuperssuatsiaite15 photos of Ellingsenite associated with Tuperssuatsiaite on mindat.org.
Analcime2 photos of Ellingsenite associated with Analcime on mindat.org.
Unnamed (Fe-analogue of Zakharovite)2 photos of Ellingsenite associated with Unnamed (Fe-analogue of Zakharovite) on mindat.org.
Polylithionite1 photo of Ellingsenite associated with Polylithionite on mindat.org.
Sazhinite1 photo of Ellingsenite associated with Sazhinite on mindat.org.
Apophyllite1 photo of Ellingsenite associated with Apophyllite on mindat.org.
Calcite1 photo of Ellingsenite associated with Calcite on mindat.org.
Natrolite1 photo of Ellingsenite associated with Natrolite on mindat.org.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for EllingseniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Yakovenchuk, V.N., Ivanyuk, G.Yu., Pakhomovsky, Y.A., Selivanova, E.A., Mikhailova, J.A., Krivovichev, S.V., Zolotarev, A.A. and Zalkind, O.A. (2011): Ellingsenite, Na5Ca6Si18O38(OH)13·6H2O, a new martinite-related mineral from phonolite of the Aris alkaline complex (Namibia). Canadian Mineralogist, 49, 1165-1173.

Internet Links for EllingseniteHide

Localities for EllingseniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Namibia (TL)
 
  • Khomas Region
    • Windhoek District
      • Aris
Yakovenchuk, V.N., Ivanyuk, G.Yu., Pakhomovsky, Y.A., Selivanova, E.A., Mikhailova, J.A., Krivovichev, S.V., Zolotarev, A.A. and Zalkind, O.A. (2011): Ellingsenite, Na5Ca6Si18O38(OH)13·6H2O, a new martinite-related mineral from phonolite of the Aris alkaline complex (Namibia). Canadian Mineralogist, 49, 1165-1173.
Mineral and/or Locality  
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