Sedimentological evidence for stacked paleo-thaw (thermokarst) lake successions in Western Europe Sedimentary successions of Last Glacial age in Europe show evidence of episodic presence of permafrost, by a range of…
The Late Cretaceous (ca. 100 Ma) diamondiferous Fort à la Corne (FALC) kimberlite field in the Saskatchewan (Sask) craton, Canada, is one of the largest known kimberlite fields on Earth…
Petrogaphy is the detailed systematic description and classification of rocks. Petrography is largely a descriptive science. Identification of minerals, structures and textures is typically done in hand specimen and in…
We are specialists in the mineralogical and petrographic investigation of natural stones, rocks and mineral resources by microscopic analysis. Looking for an independent, reliable third-party, analysing natural stones, rocks and…
The LibreOffice version of TriAngle is now ready for download at the TriAngle sub page! It offers the same functionality like its Excel counterpart and is the ideal template for…
Warnsloh, J.M. (2015) TriAngle: A Microsoft Excel™ spreadsheet template for the generation of triangular plots. N. Jahrb. Miner./J. Min. Geochem., 192, 1, 101-105. DOI: 10.1127/0077-7757/2014/0267 will be available in a…
A new version of TriAngle is now ready for download at the TriAngle sub page. New feature: Changes in layout and line formats Feldspar diagram looks now better due to…
A new version of TriAngle is now ready for download at the TriAngle sub page. New feature: In comparison to other Excel spreadsheets for triangular plots, TriAngle offers the user…
TriAngle is a Microsoft ExcelTM spreadsheet template to create triangular plots in an easy way. Features: Simple to handle Automatic normalisation to 100% of inserted data No use of VBA;…
Geologic Country Report with Emphasis on Diamonds, Gold, and Titanium (July 2011)
The Republic of Sierra Leone is located on the West Coast of Africa, between latitudes 7 and 10 north and longitudes 10.5 and 13 west.
The mining sector is a significant contributor to Sierra Leone’s economy; it accounted for about 90 % of export revenues, mainly from diamond exports, and 20 % of the gross domestic product (GDP). Sierra Leone was the world’s 10th ranked producer of diamond by volume in 2009 and the world’s third ranked producer of rutile. (more…)