1994 REPORT ON WHIN SILL DOLERITE WS‐E FROM ENGLAND AND PITSCURRIE MICROGABBRO PM‐S FROM SCOTLAND: ASSESSMENT BY ONE HUNDRED AND FOUR INTERNATIONAL LABORATORIES

This compilation report describes the field location, mineralogy, preparation and homogeneity testing of two new GIT‐IWG reference materials: Whin Sill dolerite (WS‐E) from England and Pitscurrie microgabbro (PM‐S) from Scotland. The elemental composition of these two new reference materials has been established by an international cooperative analysis programme involving participation by 104 laboratories. A full assessment of these analytical results is presented, from which working values have been derived for the major elements as well as for 45 trace elements in WS‐E and 44 trace elements in PM‐S. Furthermore, isotopic ratios are presented for both samples, particularly for 87 Sr/ 86 Sr and 143 Nd/ 144 Nd.