Sample 		Mineral 		Source rocks 	Locality					               Laser       Type
                                              								                                 (nm)

Figure 1
Zrn_1		Zircon		Unknown		Norway						785	MI
1173_Zrn_1	Zircon		Pegmatite	Premosello, Novara, Piemonte, Italy			532	MI
S4039_Zrn_3	Zircon		Modern sand	Koichab River, Namibia				633	CB
WG_55_6A	Apatite		Modern sand	Rioni River, Caucasus, Georgia			633	CB
1613_Mnz_1	Monazite		Pegmatite	Nibbio, Verbania, Piemonte, Italy			532	MI
BR451_53_1	Xenotime		Placer sand	Brahmaputra River, Serajganj, Bangladesh		488	PS

Figure 2
Prp_1		Pyrope		Micaschist	Dora Maira, Martiniana Po, Cuneo, Piemonte, Italy		785	MI
BR451_180_M	Almandine	Placer sand	Brahmaputra River, Serajganj, Bangladesh		785	PS
Sps_1		Spessartine	Pegmatite	Ornavasso, Val Dossola, Verbania, Piemonte, Italy		785	MI
Uva_1		Uvarovite		Chromitite	Saranovskii mine, Permskaya Oblast’, Urals, Russia	532	MI
Grs_1		Grossular		Rodingite		Valle d’Aosta, Italy					532	MI
BR451_180_N	Andradite		Placer sand	Brahmaputra River, Serajganj, Bangladesh		785	PS

Figure 3
Bal_1		Canada Balsam	Organic resin							532	
Ara_1		Araldite                     Organic resin 							488
Epofix_1		Epofix                       Organic resin 							532

Figure 4
BR451_106_29	Ilmenite		Placer sand	Brahmaputra River, Serajganj, Bangladesh 		633	PS
BR451_106_66	Magnetite		Placer sand	Brahmaputra River, Serajganj, Bangladesh		633	PS
Hem_1		Hematite		Iron ore deposit       Monte Giove  Mine, Rio Marina, Isola d’Elba, Italy		633	PS
S3176 _63_7 	Cr-spinel	                Modern sand	Sittwe beach, Myanmar				633	PS
Chr_10		Chromite		Peridotite		Finero, Malesco, Verbano-Cusio-Ossola, Piemonte, Italy	633	PS
Chr_8		Mg-chromite	Chromite deposit 	Troodos Complex, Cyprus				633	PS

Figure 5
1058_Sd_1	Siderite		Ore deposit	Brosso, Torino, Piemonte, Italy			532	MI
Ank_1		Ankerite		Carbonate veins	Brusson, Val d’Ayas, Valle d’Aosta, Italy			633	MI
Fl_1		Fluorite		Calcareous rock	Termini Imerese, Palermo, Sicilia, Italy			532	MI
SA2_AA_Brt	Baryte		Ore deposit	San Giovanni mine, Oristano, Sardegna, Italy		785	AR
1589_Cls_1	Celestine		Evaporitic  rock	Enna, Sicilia, Italy					785	MI
Toz_1a		Topaz		Greisen		Cuasso al Monte, Varese, Lombardia, Italy		785	MI

Figure 6
SA2_A_Rt	Rutile		Quartzite		Santa Benedetta Canavese, Torino, Piemonte, Italy	785	AR
1991_Ant_1	Anatase		Serpentinite	Pozzolo, Parma, Emilia-Romagna, Italy			785	MI
Brk_1		Brookite		Gneiss	                     Val di Susa, Torino, Piemonte, Italy			532	MI
Ttn_1		Titanite		Rodingite		Valle d’Aosta, Italy					532	MI
Prv_1		Perovskite	Ophiolitic rock	Rocca Castellaccio, Sondrio, Lombardia, Italy		532	MI
Ti-ClHu_1	Titanclinohumite	Ophiolitic rock  	        Rocca Castellaccio, Sondrio, Lombardia, Italy		785	MI

Figure 7
Fo_1		Forsterite		Detrital grain 	Melezzo River, Verbano-Cusio-Ossola, Italy 		633	MI
Ol_1		Olivine		Basalt		Lanzarote, Canary Islands, Spain			532	MI
SA2_AD_Fa	Fayalite		Granophyre	Cuasso al Monte, Varese, Lombardia, Italy		785	AR
En_1		Enstatite		Modern sand	Moleno River, Lepontine Dome, Switzerland		532	CB
Opx_1                      Hyperstene              Basalt                      Pietra Nera, Agrigento, Sicilia, Italy                                          532          MI
Hyp_1		Hyperstene	Dacite		Zimmari beach, Panarea, Messina, Sicilia, Italy		532	CB

Figure 8
Di_1		Diopside		Rodingite		Valle d’Aosta, Italy					532	MI
SA2_J_Hd	Hedenbergite	Skarn		Punta Filomena, Isola d’Elba, Toscana, Italy		785	AR
SA2_K_Aug	Augite		Basalt		Falcade, Belluno, Veneto, Italy			785	AR
S682_Ti-Aug_1	Titano-augite	Modern sand	Girne beach, North Cyprus				532	MI
Omp_1		Omphacite	Quartz vein              	Quincinetto, Valle d’Aosta, Italy			532	MI
SA2_L_Ae	Aegirine		Pegmatite	Mount Saint Hilaire, Quebec, Canada			785	AR

Figure 9
Hbl_1		Hornblende	Micaschist	Moso in Passiria, Bolzano, Trentino-Alto Adige, Italy	785	MI
BR451_106_7	Pargasite		Modern sand	Brahmaputra River, Serajganj, Bangladesh	                 488	PS
S3974_11	Kaersutite	Modern sand	Jafurah Sand Sea, Saudi Arabia		                 633	CB
SA2_U_Gl	Glaucophane	Glaucophanite	Oropa, Biella, Piemonte, Italy				 785	AR
Fe-Gl_1		Fe-Glaucophane	Glaucophanite	          Vernè, Val Varaita, Sampeyre, Cuneo, Piemonte, Italy	 532	MI
SA2_V_Cro	Crossite		Eclogite		Monviso, Piemonte, Italy				 785	AR
2216_Cum_1	Cummingtonite	Pegmatite                	Ca' Mondei, Montescheno, Piemonte, Italia		 532	MI
Tr_1		Tremolite		Dolomitic marble	      Campolungo, Switzerland				 532	MI
Act_1		Actinolite		Talcoschist	               Primolo, Val Malenco, Lombardia, Italy		                 532	MI

Figure 10
A1_J_Czo	Clinozoisite	Ortogneiss	Beura, Verbania, Piemonte, Italy			785	AR
S SA1_D_Ep	Epidote		Rodingite		Valle Antrona, Novara, Piemonte, Italy			785	AR
SA1_I_Pie	Piemontite	Mn-deposit	Praborna mine, Aosta, Valle d’Aosta, Italy		785	AR
SA2_H_Zo	Zoisite		Quartz vein	Val d’Ayas, Aosta, Valle d’Aosta, Italy			785	AR
BR451_150_58	Allanite		Placer sand	Brahmaputra River, Serajganj, Bangladesh	                 633	PS
SA1_M_Ves	Vesuvianite	Calc-silicate rock	Dosso degli Areti, Brescia, Lombardia, Italy	                 785	AR
BR451_106_66	Magnetite		Placer sand	Brahmaputra River, Serajganj, Bangladesh		633	PS

Figure 11
Sill_1		Sillimanite	Pegmatite	Premosello, Novara, Piemonte, Italy			785	MI
And_1		Andalusite	Quartz vein	Canete, Villa di Chiavenna, Sondrio, Lombardia, Italy	785	MI
Ky_1		Kyanite		Micaschist	Murchison Falls, Victoria Nile, Uganda			785	MI
St_1		Staurolite		Micaschist	Corenno Plinio, Lecco, Lombardia, Italy			532	MI
LBA10-04a_ Cld_1	Chloritoid		Detrital grain	Tipam Formation, Surma Basin, Bangladesh		532	CB
L Dra_1		Dravitic tourmaline	Micaschist	Val Bodengo, Lombardia, Italy			                 785	MI

Figure 12
Py_1		Pyrite   	                Mineralized vein	Gries Pass, Switzerland 			                532	MI
Sph_1		Sphalerite	Pb-Zn ore		Sardinia, Italy				                532	MI
Moi_1	                Moissanite	Abrasive paste     				                                                 785	MI
Cst_1		Cassiterite	Modern sand	 Kinta District, Perak, Malaysia			633	CB
Sch_1		Scheelite		Gneiss		Lodrino, Switzerland				633	MI
SA2_C_Crn	Corundum	Pegmatite	Val Sabbiola, Vercelli, Piemonte, Italy			532	AR
Fe-Cph_1		Fe-Carpholite	Metamorphic rock	Colle d’Esischie, Cuneo, Piemonte, Italy		                 532	MI
Axn_1		Axinite		Mn-bearing rock	Monte Pu, Castiglione Chiavarese, Liguria, Italy		532	MI
SA1_R_Prh	Prehnite		Ophiolitic rock	Valtournanche, Aosta, Valle d’Aosta, Italy		785	AR

Appendix Table A1. Origin of analysed minerals, the spectrum of which is illustrated in Figures 1 to 12. Lasers used and type of grain/crystal mount is indicated for each (AR= grain embedded in Araldite; CB= grain embedded in Canada Balsam; MI= micromount; PS= grain mounted on pin stub).