How to understand the meaning of associated gold in Caishui [2002] 142

Question Caishui [2002] 142 Article 1: Gold production and business units sell gold (excluding the following varieties: AU9999, AU9995, AU999, au 995；; ; Gold (hereinafter referred to as standard gold) and gold ore (including associated gold) with specifications of 50g, 100g, 1kg, 3kg and 12.5kg are exempt from VAT. Regarding the meaning of associated gold, the Reply of Guangdong Provincial State Taxation Bureau on Exempting Value-added Tax from Selling Gold Mines (including associated gold) (Guangdong Guoshuihan [2008] No.410) explains as follows: "Associated gold" refers to gold associated with gold-bearing mineral products and smelting intermediate products, including gold in ores, gold in other nonferrous metal concentrates and gold in smelting intermediate products. Associated gold mentioned in Caishui [2002] 142 includes not only half-life gold ore, that is, gold-bearing mineral products, but also associated gold in smelting intermediate products.