| Locality type: | Pegmatite |
| Classification |
|---|
|
| Species: | Epididymite |
| Formula: | Na2Be2Si6O15 · H2O |
| Chemical Analyses: |
|---|
|
| Oxide wt%: | | 1 |
|---|
| SiO2 | 73.74 % |
|---|
| BeO | 10.56 % |
|---|
| Na2O | 12.88 % |
|---|
| H2O | 3.73 % |
|---|
| Total: | 100.91 % |
|---|
|
| Sample references: | |
| Comments: | Penetration twins may occur |
| Habit: | Slender, prismatic, elongated along [001] |
| Colour: | Colorless |
| Abundance at site: | Common |
| Confirmation |
|---|
|
| Validity: | Valid - Type Locality |
| Associated Minerals Based on Photo Data: |
|---|
|
| Albite | ⓘ10 photos of Epididymite associated with Albite at this locality. |
| Quartz | ⓘ9 photos of Epididymite associated with Quartz at this locality. |
| Elpidite | ⓘ7 photos of Epididymite associated with Elpidite at this locality. |
| Aegirine | ⓘ7 photos of Epididymite associated with Aegirine at this locality. |
| Polylithionite | ⓘ4 photos of Epididymite associated with Polylithionite at this locality. |
| Calcite | ⓘ4 photos of Epididymite associated with Calcite at this locality. |
| Synchysite-(Ce) | ⓘ3 photos of Epididymite associated with Synchysite-(Ce) at this locality. |
| Tainiolite | ⓘ2 photos of Epididymite associated with Tainiolite at this locality. |
| Neptunite | ⓘ1 photo of Epididymite associated with Neptunite at this locality. |
| Ancylite-(Ce) | ⓘ1 photo of Epididymite associated with Ancylite-(Ce) at this locality. |
| Data |
|---|
|
| Mineral Data: | Click here to view Epididymite data |
| Locality Data: | Click here to view Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland |
| Photo Gallery | View Gallery (16 photos) |
| Data Identifiers |
|---|
|
| Mindat Occurrence Record ID: | 4913 |
| Long-form Identifier: | 1:3:4913:9 |
| GUID (UUID V4): | 482e31f6-15f5-47b8-bd94-df940abf653e |
| Nearest other occurrences of Epididymite |
|---|
|
|
| 29.1km (18.1 miles) | ⓘMount Nakkaalaaq, Ilímaussaq complex, Kujalleq, Greenland |
| 32.5km (20.2 miles) | ⓘTaseq Slope, Ilímaussaq complex, Kujalleq, Greenland |
| References |
|---|
|
|
| Reference Search (possible matching items) |
|---|
 | Gatta, G. D., Rotiroti, N., McIntyre, G.J., Guastoni, A., Nestola, F. (2008) New insights into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal neutron diffraction study. American Mineralogist, 93 (7) 1158-1165 doi:10.2138/am.2008.2965 | Journal (article/letter/editorial) | | New insights into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal...dimorphic hydrated sodium beryllium silicates, epididymite [a = 12.7334(4), b = 13.6298(5), c = 7.3467(3)...2261 unique reflections with Fo > 4σ(Fo) for epididymite, and R1 = 0.0478 for 136 refined parameters and...extra-framework cation) occurs in both dimorphs. Keywords: Epididymite, eudidymite, crystal chemistry, single-crystal...diffraction, hydrogen bonding Introduction Epididymite and eudidymite are dimorphous open-framework |  | Armstrong, J. A., Friis, H., Lieb, A., Finch, A. A., Weller, M. T. (2010) Combined single-crystal X-ray and neutron powder diffraction structure analysis exemplified through full structure determinations of framework and layer beryllate minerals. American Mineralogist, 95 (4) 519-526 doi:10.2138/am.2010.3276 | Journal (article/letter/editorial) | | bavenite in the Ilímaussaq alkaline complex, South Greenland, and determined the unit cell from powder X-ray...first described from the Narssârssuk Pegmatite, Gardar Province, South Greenland, by Bøggild (1915), although...in a quartzite surrounding parts of the Narssârssuk pegmatite, i.e., the material is not from the actual...Kvanefjeld, Ilímaussaq alkaline complex, South Greenland, which is still the only known occurrence for...44 0.63 0.97 Notes: Locality key: NAR, Narssârssuk Pegmatite; ILI, Ilímaussaq Alkaline Complex; MSH, |  | | Book | | 42(H2O)0.18[Al2(Be2.35Li0.65)Si6O18] from Mokrusha pegmatite, Murzinka, Middle Urals (Yakubovich et al. 2009;...phosphates: nahpoite Na2(HPO4) from peralkaline pegmatite of the Lovozero massif (a), newberyite Mg(HPO4)·3H2O...Al)4(B,Be)12O28 (Fig. 2.5) Locality: Sahutany pegmatite field, Madagascar. Description: Yellowish semitransparent...Description: White granular aggregate from peralkaline pegmatite. Investigated by I.V. Pekov. Kind of sample preparation...58) Locality: Narssârssuq pegmatite, Igaliko alkaline complex, South Greenland. Description: Colourless |
|
Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland