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Glauconite is an iron potassium phyllosilicate (mica group) mineral of characteristic green color which is very friable and has very low weathering resistance.
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mineral green color greensand glauconitic marl group mica found also references potassium siltstone sand phyllosilicate monoclinic deposits used sandstone organic
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Glauconite | Birefringence | δ = 0.020 – 0.032 | 1.00 | infobox |
| Glauconite | Category | Phyllosilicate minerals | 1.00 | infobox |
| Glauconite | Cleavage | Perfect | 1.00 | infobox |
| Glauconite | Color | Blue green, green, yellow green | 1.00 | infobox |
| Glauconite | Crystal class | Prismatic (2/m) (same H-M symbol) | 1.00 | infobox |
| Glauconite | Crystal habit | Elastic platy/micaceous, or as rounded pellets/aggregates | 1.00 | infobox |
| Glauconite | Crystal system | Monoclinic | 1.00 | infobox |
| Glauconite | Diaphaneity | Translucent to nearly opaque | 1.00 | infobox |
| Glauconite | Formula | .mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:l… | 1.00 | infobox |
| Glauconite | Group | Mica group, dioctahedral mica group | 1.00 | infobox |
| Glauconite | IMA symbol | Glt | 1.00 | infobox |
| Glauconite | Luster | Dull, earthy | 1.00 | infobox |
| Glauconite | Mohs scale hardness | 2 | 1.00 | infobox |
| Glauconite | Optical properties | Biaxial (-); moderate relief | 1.00 | infobox |
| Glauconite | Other characteristics | loosely bound aggregates, crumbles radioactivity: barely detectable | 1.00 | infobox |
| Glauconite | Pleochroism | X = yellow-green, green; Y = Z = deeper yellow, bluish green | 1.00 | infobox |
| Glauconite | Refractive index | nα = 1.590 – 1.612 nβ = 1.609 – 1.643 nγ = 1.610 – 1.644 | 1.00 | infobox |
| Glauconite | Space group | C2/m | 1.00 | infobox |
| Glauconite | Specific gravity | 2.4–2.95 | 1.00 | infobox |
| Glauconite | Streak | Light green | 1.00 | infobox |
| Glauconite | Unit cell | a = 5.234 Å, b = 9.066 Å, c = 10.16 Å; β = 100.5°; Z = 2 | 1.00 | infobox |
| Glauconite | is a | iron potassium phyllosilicate | 0.90 | text |
| Glauconite | is a | authigenic mineral and forms commonly in marine settings | 0.90 | text |
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