Table 1.

Sherds analyzed by HPLC-MS/MS with contextual information and museum storage information

Origin	Site	No. of samples	Unwashed	Washed
Field	Shabik’eschee Village	10	10
Field	Site 315	14	14
Laboratory	Pueblo Bonito*	34	34
Laboratory	Windy Knob	1	1
Laboratory	Monsoon House	3	3
Laboratory	Meadow View	1	1
Laboratory	Aztec Ruins*	10	2	8
Laboratory	Lake Roberts Site	10	10
Laboratory	Upper Santan Village	7	7
Museum box	Chetro Ketl*	8	6	2
Museum box	Guadalupe Ruin	10	5	5
Museum box	Pottery Mound Pueblo*	10	5	5
Museum box	Grasshopper Pueblo*	1		1
Museum box	Kinishba*	5		5
Museum box	Point of Pines Pueblo*	14	3	11
Museum box	University Indian Ruin	1	1
Museum box	Galaz Ruin*	20	6	14
Museum box	Snaketown*	7		7
Museum shelf	Pueblo Bonito*	5	5
Museum shelf	Snaketown*	6		6
Total		177	113	64
Positive results			30	10
Percent positive, %			27	17

Sites marked with an asterisk have other known Mesoamerican exotic items.