| Id | Identification Type | Name | Description | Distinguishing Features | Tags |
|---|---|---|---|---|---|
| 102 | Mineral | Magadiite | Rare evaporite mineral common to Lake Magadi, Kenya. | silicate evaporite transparent colorless |
|
| 55 | Mineral | Microcline | Transparent colorless. Nonpleochroic. Low order birefringence colors. Distinctive twinning pattern from the intersection of pericline and albitic twins ("tartan plaid" or "cross-hatched") in cross-polarized light is virtually diagnostic of microcline. Tabular and cleavage fragments. Moderate relief.
See also feldspar. |
tartan-twinned
low-birefringence |
silicate plaid tartan cross-hatch twinned feldspar cleavage transparent colorless |
| 7 | Mineral | Micronodule | |||
| 148 | Contaminant | Mold | contaminant | ||
| 48 | Mineral | Muscovite | Transparent, colorless. Strong second-order birefringence. Shredded or stringy texture common. Low relief. Usually does not look similar to biotite. | Shredded
Stringy Colorless High-birefringence |
ragged transparent mica silicate |
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