Rock samples: preliminary information and photos

Abbreviations:
* LU: Lithological unit
* GC: Geographic coordinates

Convention:
Node text: Rock sample name (Age of the LU) - Map name (Map scale)

1. Information from a reference geological map
1.1. Map name: Torkamanchay-Qarachaman
1.2. Map scale: 1:100,000
1.3. Symbol of the LU: E2vl
1.3. Age of the LU: Eocene
1.4. Description of the LU: Violet latite lava with tuff
1.5. GC of the map boundaries*: 37.50-38.0 N; 47.0-47.50 E
1.6. Reference (of the geological map): Asadian, A. and Aminifazl, A. and Khodabandeh, A., 1993. Geological map of Torkamanchay-Qarachaman, scale, 1(100,000)

* Using the coordinate fields at the bottom of the post makes data geographically filterable during users’ searches.

2. Additional information
2.1. Rock sample name: Tuff
2.2. Identifiable minerals: Manganese, Hematite, Limonite (as secondary mineralization)
2.3. Rock texture: Fine-grained, Crystalline
2.4. Rock colour: Light grey (Felsic)
2.5. Exposure: Drilling core
2.6. Magmatic setting: -
2.7. Structural setting: -
2.8. GC of the sample rock: -
2.9. Geological structure: Joint
2.10. Note: The photo displays dendritic patterns of manganese oxyhydroxide on two horizontal joints formed on a slightly greenish-white tuff. The morphology of most dendrites is tree-like.

3. About the photo:
3.1. Sample dimension: 10-40 cm
3.2. Copyright and licence: Creative Commons
3.3. Credit: Qapcon.com