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| Chinese National Standard Category: Coal petrography |
| English Title: | Microscopical determination of the reflectance of vitrinite in coal |
| Chinese Title: | 煤的镜质体反射率显微镜测定方法 |
| Standard No.: | GB/T 6948-1998 |
| Category No.: | D26 |
| Issued by: | State Qualtiy Technical Supervision Bureau |
| Issued on: | 1998-12-08 |
| Implemented on: | 1999-5-1 |
| Status: | superseded |
| Superseded by: | GB/T 6948-2008 Method of determining microscopically the reflectance of vitrinite in coal |
| Superseded on: | 2009-3-1 |
| Abolished on: | 2009-03-01 |
| Superseding: | GB/T 6948-1986 Method of determining microscopically the reflectance of vitrinite in coal |
| Word Count: | 7500 words |
| Similar Standards: | GB/T 40485-2021 JG/T 8-2016 GB/T 15589-2013 GB/T 8899-2013 GB/T 30050-2013 GB/T 16773-2008 GB/T 12937-2008 GB/T 15590-2008 GB/T 6948-2008 MT/T 955-2005 MT/T 959-2005 MT/T 958-2005 MT/T 957-2005 GB/T 19222-2003 GB/T 18023-2000 MT/T 807-1999 GB/T 6948-1998 MT/T 507-1995 GB/T 12937-1995 GB/T 15590-1995 |
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