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Maintenance of the Field Booklet
All of the observations will need to be written down on the field booklet. In the case where the booklet has fixed pages in it, it is suggested to keep the pages on the left for the number of the samples and a rough sketch. Obviously this will be done about the observations done on the outcrops that will occupy more space; general description and outcropping and measurements, description of the rocks, of the significant fractures and mineralization; notes about the sampling method and of the sampling numbers; in the case in which and indication is discovered, the description will be accompanied with a blue print in each section.
Document updating
A number of maps will need to be made:
- “A map of the itineraries”, with the indications of the itineraries, of the reference points, of the distances and indications of the corresponding numbers to the points of observation marked in the field booklet.
- “A map of the outcrops”, with the indications through symbols, of the nature of the rocks, faults, direction and dip metamorphic rock.
This map will always be a very useful document to know the context of possible indications and can be retaken a second time in the case of a regular geological lifting.
- “A map of the sampling points” that can have annexed the tables of the results of the analysis.
- “A mineralization map”, about which all the old mineralization and new ones that have been discovered will be reported. The discovery of indications will give place to the editing of a file that can be done as such
Indication file model
Done on: (date)
Of: (name of geologist or prospector)
- Number:
- Name:
- Main elements:
- Morphology: (stockwerk, vein, shear-zone, solid, stratum, etc)
- Localization and access:
- Latitude:
- Length:
- Altitude:
- Geographic and geologic maps:
- Local and regional geology from the petrographic, stratigraphic, and structural point of view.
- Description of indication: Width, length, potency, direction, and dip.
- Mineral structure:
- Mineralization
- Gangue:
- Primary minerals:
- Supergenic minerals:
- Type and relation with the covering rock (sedimentary, volcano sedimentary, acid, segregation, skarn).
- Results of the analysis
- Previous jobs: (description and sketches)
- Carried out jobs: (ditches, wells, etc)
- Other observations:
- Bibliography
Heliport prospecting
In the regions with inexistent vegetation covering or with dense vegetation and with big areas of outcrops, a heliport can be an excellent means of a strategic prospection. This allows the observation of a relatively big surface in a brief time. The observation from the helicopter allows us to easily observe hydrothermal alterations, iron layers, old workings, particular layers such as chert, jasper, carbonate rocks, conglomerates, etc.; veins, fracture zones, contacts, mineral lenses (chromites), mineralized stratus, etc. When considering the cost of a helicopter it will be necessary to also take the geophysical prospecting material as complete as possible to make it worthwhile (gamma detector, magnetometer, etc.)
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