Classification of Makarochkinite |
| IMA status: | Approved 2003 |
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| Strunz 8th edition ID: | 8/F.14-45
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| Nickel-Strunz 10th (pending) edition ID: | 9.DH.40
9 : SILICATES (Germanates) D : Inosilicates H : Inosilicates with 4-periodic single chains, Si4O12 |
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| mindat.org URL: | http://www.mindat.org/min-2547.html Please feel free to link to this page. |
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Type Occurrence of Makarochkinite |
| Type Locality: | Pit No. 400, Lake Ishkul', Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia |
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| General Appearance of Type Material: | equant masses, 5-50 mm across |
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| Geological Setting of type material: | granitic pegmatite |
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| Associated Minerals at type locality: | |
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Physical Properties of Makarochkinite |
| Lustre: | Vitreous |
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| Diaphaneity (Transparency): | Opaque |
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| Colour: | black |
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| Hardness (Mohs): | 5½ - 6 |
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| Tenacity: | Brittle |
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| Cleavage: | None Observed |
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| Fracture: | Irregular/Uneven |
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| Density (measured): | 3.93 g/cm3 |
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| Density (calculated): | 3.933 g/cm3 |
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Crystallography of Makarochkinite |
| Crystal System: | Triclinic |
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| Class (H-M): | 1 - Pedial |
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| Space Group: | P1 |
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| Cell Parameters: | a = 10.355Å, b = 10.751Å, c = 8.873Å α = 105.707°, β = 96.227°, γ = 124.861° |
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| Ratio: | a:b:c = 0.963 : 1 : 0.825 |
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| Unit Cell Volume: | V 735.7 ų |
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| Z: | 2 |
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| Twinning: | absent |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 7.997 | | (57) | | 4.779 | | (29) | | 3.120 | | (32) | | 2.924 | | (69) | | 2.676 | | (77) | | 2.530 | | (100) | | 2.410 | | (28) |
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| Comments: | Format: d-spacing/Å (I) (hkl) |
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Optical Data of Makarochkinite |
| Type: | Biaxial |
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| RI values: | nα = 1.821 - 1.849 nγ = 1.850 - 1.880 |
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| Maximum Birefringence: | δ = 0.029 - 0.031
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Pleochroism: | Visible |
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| Comments: | X = greenish brown, Y = yellowish brown, Z = reddish brown; Y ≤ X < Z |
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Chemical Properties of Makarochkinite |
| Formula: | |
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| Essential elements: | Ca, Fe, O, Si |
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| All elements listed in formula: | Al, Be, Ca, Fe, O, Si, Ti |
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| Common Impurities: | Na,Mn,Mg |
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Relationship of Makarochkinite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
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Other Names for Makarochkinite |
| Synonyms: | |
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| Other Languages: | |
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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. |
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References for Makarochkinite |
| Reference List: | Grew et al (2005), Am.Min.: 90: 1402-1412). |
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Internet Links for Makarochkinite |
| Search Engines: |
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| External Links: | Look for Makarochkinite on WebmineralLook for Makarochkinite on Athena MineralogyLook for Makarochkinite on WikipediaLook for Makarochkinite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Makarochkinite in the Natural History Museum (London) online catalogue |
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Localities for Makarochkinite |