Wadalite (original) (raw)
Formula:
(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3
Colour:
Lemon-yellow, colourless, grey, black
Lustre:
Vitreous, Sub-Vitreous
Specific Gravity:
3.06 (Calculated)
Name:
Named in honor of Tsunashiro Wada (1856, Japan - 20 December 1920, Tokyo, Japan), the first director general of the Geological Survey of Japan. He also variously served as professor at the Faculty of Science of the Imperial University of Tokyo, as the director-general of Mining Affairs of the Ministry of Agriculture and Commerce and as the Commissioner of Steelworks. He helped to establish the modern study of mineralogy in Japan.
Long-form identifier:
mindat:1:1:4226:6
caa08d5f-8d5d-4a7d-ba58-708a162deae1
Transparency:
Transparent, Translucent
Colour:
Lemon-yellow, colourless, grey, black
Comment:
In thin section, wadalite is transparent and colorless to pale yellowish brown.
Density:
3.06 g/cm3 (Calculated)
RI values:
n = 1.700 - 1.712
Birefringence:
Isotropic minerals have no birefringence
Mindat Formula:
(Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3
Class (H-M):
43_m_ - Hextetrahedral
Cell Parameters:
a = 12.009(2) Å
Unit Cell V:
1,731.89 ų (Calculated from Unit Cell)
Morphology:
Tris-tetrahedral crystals showing dominant {211} and truncated by {211}.
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0010280 | Wadalite | Tsukimura K, Kanazawa Y, Aoki M, Bunno M (1993) Structure of wadalite Ca6Al5Si2O16Cl3 Acta Crystallographica C49 205-207 |  |
1993 | 0 | 293 | |
| 0014725 | Wadalite | Mihajlovic T, Lengauer C L, Ntaflos T, Lolitsch U, Tillmanns E (2004) Two new minerals, rondorfite, Ca8Mg[SiO4]4Cl2, and almarudite, K(box,Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30], and a study of iron-rich wadalite, Ca12[(Al8Si4Fe2)O32]C16, from the Bellerberg (Bellberg) volcano, Eifel, Germany Eastern Eifel volcanic area, Eifel, Germany Neues Jahrbuch fur Mineralogie, Abhandlungen 179 265-294 | 2004 | Bellerberg volcano lava field, 2 km N of Mayen, | 0 | 293 |
CIF Raw Data - click here to close
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.912 Å | (15) |
| 3.215 Å | (11) |
| 3.008 Å | (48) |
| 2.691 Å | (100) |
| 2.565 Å | (9) |
| 2.456 Å | (46) |
| 2.360 Å | (21) |
| 2.197 Å | (19) |
| 1.952 Å | (10) |
| 1.737 Å | (13) |
| 1.702 Å | (8) |
| 1.669 Å | (34) |
| 1.637 Å | (8) |
| 1.608 Å | (31) |
| 1.504 Å | (14) |
| 1.481 Å | (8) |
| 1.399 Å | (9) |
| 1.363 Å | (4) |
| 1.345 Å | (9) |
| 1.313 Å | (16) |
| 1.283 Å | (9) |
| 1.215 Å | (7) |
| 1.117 Å | (17) |
Comments:
Mihajlović, T., Lengauer, C.L., Ntaflos, T., Kolitsch, U., Tillmanns, E. (2004) Two new minerals rondorfite, Ca8Mg[SiO4]4Cl2, and almarudite, K(ٱ,Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30], and a study of iron-rich wadalite, Ca12[(Al8Si4Fe2)O32]Cl6, from the Bellerberg (Bellberg) volcano, Eifel, Germany. Neues Jahrbuch für Mineralogie, Abhandlungen: 179: 265-294.
General Appearance of Type Material:
Tris-tetrahedral crystals up to 1 mm in size. Along margins and fractures, it is partially replaced by katoite. There are also pseudomorphs of katoite and other species after wadalite.
Place of Conservation of Type Material:
Geological Museum, Geological Survey of Japan, AIST, Tsukuba, Japan, number GSJ M17112 (holotype).
Geological Setting of Type Material:
Calcsilicate xenolith in two-pyroxene andesite.
Associated Minerals at Type Locality:
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
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.
- 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.