Clear requirements, identified material and relevant evidence guide our talc supply.
Inside our laboratory.
Colour and brightness measurement in our laboratory.
Blanc Fixe Minerals · Quality Policy
Supply against a clear, agreed requirement.
We aim to supply talc that meets the agreed customer specification through source selection, controlled preparation, representative assessment and clear communication.
Define the requirement. Agree origin, material form, grade, relevant test methods and acceptance criteria.
Preserve material identity. Keep selected grades distinct and connect source, lot, sample and shipment references.
Assess representative material. Use agreed sampling and laboratory preparation to support quality decisions.
Communicate the evidence clearly. Match reports to the material tested and explain their scope.
Improve through feedback. Review customer feedback and quality discrepancies to improve selection and preparation.
What we do at Blanc Fixe
Source & hand-sort
Select material, screen size fractions and manually separate visible selections. Keep Pakistan and Afghan offerings identified.
Prepare & test samples
Use controlled laboratory preparation and in-house optical assessment, with Konica Minolta CR-400 and CM-600d instruments. Compare results on a common preparation and measurement basis.
Retain references
Keep identified reference samples for customer and third-party cross-checks. Connect sample records with the applicable lot.
Coordinate qualification
Discuss relevant reports, independent assessment, sample delivery and buyer visits according to the order’s requirements.
Preparing samples for testing.
Laboratory grinding equipment used to prepare talc samples for testing.
Our technical documentation summarises testing of Sherwan samples by RJ Lee Group using XRD, PLM and TEM, with no detectable asbestos reported in those samples. Review the original laboratory report and its sample scope during qualification.
SGS Netherlands, RJ Lee Group USA or another qualified laboratory can be discussed for the agreed assessment. Sherwan sample results do not qualify Afghan material.
Sampling & retained samples
Identify the lot, collect increments across the material and agree reduction and preparation for the required tests. Retained samples support customer and third-party cross-checks.
A selected stone does not represent a mixed shipment. Collection coverage and preparation should be agreed for the actual lot; one fixed sample mass is not suitable for every order.
Brightness, colour, composition & LOI
Name R457, Ry and/or L*, a*, b* separately, with preparation and measurement conditions. Agree chemical or mineralogical parameters and moisture requirements for the material.
Specify LOI test conditions and interpret the result alongside composition. LOI alone does not establish talc purity. Powder evaluation also needs an agreed particle-size distribution and method.
Laboratory Sample Preparation for Mineral Testing.Preparation controls & documentation
Grade-specific stockpiles, cleaning between lots and dedicated bagging areas support segregation and reduce cross-contamination.
Ask which source, lot and sample references connect the proposed material to its reports and shipment records.
Share your material, application and target specification to start a qualification discussion.
