Classification of Amakinite |
| IMA status: | Approved |
|---|
| Strunz 8th edition ID: | 4/F.03-20
|
|---|
| Nickel-Strunz 10th (pending) edition ID: | 4.FE.05
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates) F : Hydroxides (without V or U) E : Hydroxides with OH, without H2O; sheets of edge-sharing octahedra |
|---|
| Dana 8th edition ID: | 6.2.1.2
6 : HYDROXIDES AND OXIDES CONTAINING HYDROXYL 2 : X(OH)2 |
|---|
| Hey's CIM Ref.: | 7.20.10
7 : Oxides and Hydroxides 20 : Oxides of Fe |
|---|
| mindat.org URL: | http://www.mindat.org/min-180.html Please feel free to link to this page. |
|---|
Type Occurrence of Amakinite |
| Type Locality: | Udachnaya-Vostochnaya pipe, Daldyn, Daldyn-Alakit kimberlite field, Saha Republic (Sakha Republic; Yakutia), Eastern-Siberian Region, Russia |
|---|
| General Appearance of Type Material: | rhombohedra to 1.5 cm; typically in irregular grains |
|---|
| Year of Discovery: | 1962 |
|---|
| Geological Setting of type material: | in a drill core, in thin veins and pockets in kimberlite |
|---|
Physical Properties of Amakinite |
| Diaphaneity (Transparency): | Translucent |
|---|
| Colour: | Pale green to yellow-green; rapidly turns brown when exposed to air, due to formation of Fe(OH)3 |
|---|
| Hardness (Mohs): | 3½ - 4 |
|---|
| Cleavage: | Poor/Indistinct observed in some grains |
|---|
| Fracture: | Irregular/Uneven |
|---|
| Density (measured): | 2.925 - 2.98 g/cm3 |
|---|
| Density (calculated): | 2.74 g/cm3 |
|---|
Crystallography of Amakinite |
| Crystal System: | Trigonal |
|---|
| Cell Parameters: | a = 6.917Å, c = 14.52Å
|
|---|
| Ratio: | a:c = 1 : 2.099 |
|---|
| Unit Cell Volume: | V 601.63 ų (Calculated from Unit Cell) |
|---|
| Z: | 12 |
|---|
| Morphology: | Rhombohedra {10_11}, modified by {10_12}, {10_14}, {11_23}, {20_25} and {0001} |
|---|
| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 2.30 | | (10) | | 1.728 | | (9) | | 2.80 | | (8) | | 1.530 | | (8) | | 5.49 | | (7) | | 1.551 | | (7) |
|
|---|
| Comments: | Material from the type locality |
|---|
Optical Data of Amakinite |
| Type: | Uniaxial (+) |
|---|
| RI values: | nω = 1.707 nε = 1.722 |
|---|
| Maximum Birefringence: | δ = 0.015
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
|---|
| Surface Relief: | High |
|---|
Chemical Properties of Amakinite |
| Formula: | |
|---|
| Essential elements: | Fe, H, O |
|---|
| All elements listed in formula: | Fe, H, Mg, O |
|---|
| Analyical Data: | Analytical results of material from the type locality
SiO2 (0.43)
Al2O3 (0.32)
Fe2O3 (31.58)
FeO (30.40)
MnO (3.63)
MgO (10.10)
H2O (22.95)
CO2 (0.32)
sum 99.91 wt.-% |
|---|
| Empirical Formula: | |
|---|
Relationship of Amakinite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
|---|
| Related Minerals - Hey's Index Grouping: | |
|---|
Other Names for Amakinite |
| German names: | |
|---|
| Russian names: | |
|---|
| Spanish names: | |
|---|
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. |
|---|
References for Amakinite |
| Reference List: | Kozlov, I. T. and Lershov, P. P. (1962): Amakinite, a new mineral of the brucite-pyrochroite group. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 91, 72-77 (in Russian). - American Mineralogist (1962), 47, 1218 (abstract).
Sviridov, V. F. and Yakovlevskaya, T. A. (1973): New data on amakinite from the kimberlitic pipe "Udachnaya". Izv. Akad. Nauk SSSR, Ser. Geol. 10, 144-147 (in Russian).
Lutz, H. D., Möller, H. and Schmidt, M. (1994): Lattice vibration spectra. Part LXXXII. Brucite-type hydroxides M(OH)2 (M = Ca, Mn, Co, Fe, Cd) - IR and Raman spectra, neutron diffraction of Fe(OH)2. Journal of Molecular Structure 328, 121-132.
Anthony, J. W., et al. (1997): Handbook of Mineralogy, Vol. 3, 13. |
|---|
Internet Links for Amakinite |
| Search Engines: |
Look for Amakinite on Google
Look for Amakinite images on Google |
|---|
| External Links: | Look for Amakinite on WebmineralLook for Amakinite on Athena MineralogyLook for Amakinite on WikipediaLook for Amakinite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Amakinite in the Natural History Museum (London) online catalogueAmakinite details from Handbook of Mineralogy (PDF) |
|---|
| Mineral Dealers: | Search for Amakinite on minvision.comBuy Minerals and Crystals from Crystalarium.comSearch for Amakinite at Thames Valley MineralsWilensky Fine Mineralse-Rocks - Mineral Auctions and SalesMineral Classics - Worldwide Collector Quality Minerals and GemsBuy Fine Minerals from mineralsweb.comWendel Minerals - Auktion & ShopTop quality minerals from Kristalle of CaliforniaLapis Mineral MagazinRare and Unusual minerals at Mineralogical Research CompanyWright's Rock Shop - excellent mineral specimens since 1970 |
|---|
| Jobs: | Mining & Geology Jobs |
|---|
Page Sponsor |
| Sponsorship: | This page is currently not sponsored. Click here to find out how you can sponsor this page. |
|---|
Localities for Amakinite |