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Greenalite is a mineral in the kaolinite-serpentine group with the chemical composition (Fe2+,Fe3+)2-3Si2O5(OH)4.
Occurrence, Effect on early life & Overview
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green kaolinite-serpentine group fe2 fe3 2-3si2o5 oh mineral references seawater siderite occurrence effect early color common pale occurs rocks metals
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Greenalite | Birefringence | δ = 0.024 | 1.00 | infobox |
| Greenalite | Category | Phyllosilicate minerals | 1.00 | infobox |
| Greenalite | Cleavage | None | 1.00 | infobox |
| Greenalite | Color | Green, light yellow-green | 1.00 | infobox |
| Greenalite | Crystal class | Domatic (m) (same H-M symbol) | 1.00 | infobox |
| Greenalite | Crystal habit | Rare minute crystals, rounded grains common; as porphyroblasts, oolites | 1.00 | infobox |
| Greenalite | Crystal system | Monoclinic | 1.00 | infobox |
| Greenalite | Diaphaneity | Translucent to subopaque | 1.00 | infobox |
| Greenalite | Formula | (Fe2+,Fe3+)2-3Si2O5(OH)4 | 1.00 | infobox |
| Greenalite | Group | Kaolinite-Serpentine group | 1.00 | infobox |
| Greenalite | IMA symbol | Gre | 1.00 | infobox |
| Greenalite | Luster | Dull, earthy | 1.00 | infobox |
| Greenalite | Mohs scale hardness | 2.5 | 1.00 | infobox |
| Greenalite | Optical properties | Biaxial (+) | 1.00 | infobox |
| Greenalite | Other characteristics | Magnetic | 1.00 | infobox |
| Greenalite | Pleochroism | X = pale yellow, Y and Z = green | 1.00 | infobox |
| Greenalite | Refractive index | nα = 1.650 - 1.675 nβ = 1.674 nγ = 1.674 | 1.00 | infobox |
| Greenalite | Space group | Cm | 1.00 | infobox |
| Greenalite | Specific gravity | 2.85 - 3.15 | 1.00 | infobox |
| Greenalite | Streak | Greenish-gray | 1.00 | infobox |
| Greenalite | Strunz classification | 9.ED.15 | 1.00 | infobox |
| Greenalite | Unit cell | a = 5.54, b = 9.55 c = 7.44 [Å]; β = 104.2°; Z = 2 | 1.00 | infobox |
| Greenalite | is a | mineral in the kaolinite-serpentine group with the chemical composition | 0.90 | text |
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