TriAngle 1.2 for LibreOffice is ready!

December 5th, 2014  Posted by jmwarnsloh

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 people who prefer to use free software on their PCs.

Have fun!

TriAngle paper will be printed soon!

November 21st, 2014  Posted by jmwarnsloh

Warnsloh, J.M. (2015) TriAngle: A Microsoft Excelâ„¢ 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 print version beginning of next year. For the abstract you can have a look at ingentaconnect.

TriAngle 1.2 is ready!

June 2nd, 2014  Posted by jmwarnsloh

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 smoothed lines
  • The manual to create individual masks got a revision and more figures

In comparison to other Excel spreadsheets for triangular plots, TriAngle offers the user the opportunity to design individual masks by simply inserting the required plotting coordinates in the pre-defined fields in the ‘Template’ worksheet. TriAngle calculates the resulting X-Y-coordinates and draws the mask.
Labels can be inserted in the same way, too.
A manual how to create individual masks and labels is shown in the worksheet ‘Manual’.

Minerals of the pyrochlore group as niobium-ore

March 27th, 2012  Posted by jmwarnsloh

In comparison to other commodities, e.g. gold, niobium-ores are related to a small number of igneous rocks, in particular carbonatites and genetically-related silicate-carbonate rocks.
Within these rocks niobium is segregated principally in oxide minerals such as the pyrochlore-microlite solid solution series (Ca,Na)2(Nb,Ta)2O6(O,OH,F) and niobian perovskite (Ca,Na)(Ti,Nb)O3. At least four other Nb minerals can occur in sufficient quantities to dominate or affect the niobium content of a carbonatite. They include ferrocolumbite FeNb2O6, fersmite (Ca,REE,Na)(Nb,Ta,Ti)2(O,OH,F)6, niocalite Ca4NbSi2O10(O,F), and wöhlerite NaCa2(Zr,Nb)Si2O8(O,OH,F). Pyrochlore is the dominant niobium host and the only mineral

World-wide Niobium and Tantalum Availability

March 26th, 2012  Posted by jmwarnsloh

Niobium is a shiny, white, soft, and ductile metal with superconductive properties. Niobium products are used in a wide variety of applications. The largest end market for HSLA steel is for large diameter steel pipelines for the transmission of natural gas and oil. Price increases in oil and natural gas during the last years have created a new interest in exploration for, and