About my favourite minerals: I cannot list all that I like, but I prefer secondary species: arsenates, phosphates, sulfates, etc. of copper, lead, cobalt, zinc, iron, manganese, uranium...

About my favourite specimens: small well formed crystals on any kind of matrix size: what matters is what is on the matrix. For practical reasons, I keep my specimens are in plastic boxes, mainly of "European" size (28 x 28 x 22 mm) up to 7.6 x 6.6 x 5.6 cm.

I have been interested in minerals for more than 35 years. Travelling to collect specimens with fellows is a great pleasure to me (France, Morocco, Spain, South West of the USA, Italy). This results in quite a large number of specimens (around 30,000 representing more than 2,000 species including more than 650 found during my field trips).

Some of my present and past activities:
. president of Association Française de Micromineralogie (AFM) between 1993 and 2007,
. discovery of new species and involvement in the definition of new species: yvonite, jacquesdietrichite, bouazzerite, maghrebite, afmite, bariopharmacoalumite and angarfite
. participation to the definition and/or publication of pushcharovskite, guanacoite, bendadaite and iangreyite.
Others hopefully on their way...,
. development a crystal design program, FACES, for easy modelling of single crystals,
. writing of articles and monographs in the AFM newsletter (Le Cahier des Micromonteurs), Lapis, Le Règne Minéral, Mineralogical record
. photography of microminerals,
. member of the Micromounters' Hall of Fame since 2000,

... still considering myself as having a lot to learn!... and pleased of learning everyday!