OREAS 725
SKU: 725
OREAS 725 has been prepared from crystalline vein graphite rich ore blended
with granodiorite. The vein type graphite material was sourced from the Queens
Graphite Mine (QGM) in the Matale/Kurunegala Project area in central Sri Lanka.
The barren I-type hornblende-bearing granodiorite was sourced from the Late
Devonian Lysterfield granodiorite complex located in eastern Melbourne,
Australia.
Fifteen commercial analytical laboratories participated in the program to
characterise Total Graphitic Carbon (TGC) by hydrochloric acid leach (~50% HCl)
to remove carbonates followed by roasting (400-500°C) to remove organic carbon,
then analysis of the residue by infrared combustion furnace (Leco – CS
Analyser).
Specifications
- State: primary
- Matrix: granodiorite
- Mineralisation: crystalline vein
- CRM Group: Graphite
Certified Values
| Analyte | Certified Value | 1SD | 95% CL Low | 95% CL High | Method |
|---|---|---|---|---|---|
| C-(Graphite), Carbon, graphitic (wt.%) | 24.52 | 0.728 | 24.15 | 24.89 | Infrared Combustion |
Ürün Özellikleri
Sertifikalı Referans Değerler
| Analit | Sertifikalı Değer | Belirsizlik (1SD) | %95 Güven Aralığı Alt | %95 Güven Aralığı Üst | Yöntem |
|---|
SD = Standart Sapma | CL = %95 Güven Limitleri
Yöntemler: AR = Kral Suyu, 4-Acid = 4-Asit Çözünürlük, LBF = Lityum Borat Füzyon, FA/AAS = Ateş Tahlili / AAS, LECO = LECO Yanma Analizi
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