The following Code Lists form the Code Directory of the standard. Each code list provides a discrete set of values that must be used for the corresponding attributes.
Language independence: Numerical coding is independent of language. The names of colors are different and have different initials in languages used nationally and regionally, including in the ICGLR context. Numerical coding is thus neutral and can be interpreted in user interfaces depending on the linguistic context.
The Code uses primarily the HS Code classification, having also correspondences with the International Mineralogical Association (IMA) classification. The Value is to be used in any user-facing interface, including forms that capture data, visualisation such as web dashboards, or exported reports.
HS Code
IMA Code
Value
7108.12.00
IMA1960-A
Gold
2609.00.00
IMA1960-001
Cassiterite
2611.00.00
IMA2000-014
Wolframite
2615.90.00
IMA1979-A
Columbite-Tantalite (Coltan)
On mineral classification schemas: In practice, the following two main schemas are used by the ICGLR member states. As agreed following the Technical Working Group meeting in Lusaka, 18–19 March 2025, the HS Codes will be used as a general standard for data exchange purposes in the context of ICGLR membership.
The Harmonized System (HS Codes) — a standardized system of names and numbers used to classify goods for international trade, developed by the World Customs Organization (WCO) in 1983, updated every 5 years.
The International Mineralogical Association (IMA) classification
Each schema offers wide coverage of the minerals that can be extracted and processed, including the designated minerals.
In practical use, in the National Minerals Database and other systems that implement the standard, the list should be extended with the codes that are relevant for the context of the usage of the system.
Mineral
HS Code
IMA Name
Formula
IMA Code
Class
HS Description
Gold
7108.12.00
Gold
Au
IMA1960-A
Native Elements
Gold (including gold plated with platinum), unwrought or in semi-manufactured forms, or in powder form
Cassiterite
2609.00.00
Cassiterite
SnO₂
IMA1960-001
Oxides
Tin ores and concentrates
Wolframite
2611.00.00
Wolframite
(Fe,Mn)WO₄
IMA2000-014
Oxides
Tungsten ores and concentrates
Columbite-Tantalite (Coltan)
2615.90.00
Columbite-Tantalite
(Fe,Mn)(Nb,Ta)₂O₆
IMA1979-A
Oxides
Niobium, tantalum, vanadium, or zirconium ores and concentrates
Combined operations: The originating operation applied for the creation of a Lot can be combined. For example, we can have 2;3;4 (Purchase, Combination, Processing) as the origin of a Lot.
