PRICING NOTICE: Discontinuation of Wyoming bentonite price

By William Clarke
Published: Monday, 15 March 2021

Fastmarkets will discontinue publication of the Wyoming bentonite price with effect from Tuesday March 16.

The price assessment being discontinued is the following:


MB-BEN-0003 Bentonite (all grades), crude, bulk, rail hopper cars, exw Wyoming, $ per short ton

Quality: Crude, bulk

Quantity: Min 100 short tons

Location: Ex-works Wyoming, US

Timing: Spot

Unit: $ per short ton

Payment terms: Within 30 days

Publication: Last Thursday of every month

Notes: Bulk rail hopper cars


Feedback from market participants indicated that there was little need for a Wyoming bentonite price, given the wide range of alternative muds in the onshore US drilling market, and the range of other bentonite sources in the global market.

The low-value, high-volume nature of Wyoming bentonite meant that prices paid by drillers were not closely correlated to the ex-works price.

In addition, bentonite prices have shown low volatility compared with other drilling inputs.

Fastmarkets will continue to cover oilfield mineral markets with its range of barite and frac sand prices.

If you have any comment on the discontinuation of this price, please contact William Clarke by email at: Please add the subject heading 'FAO: William Clarke, re: bentonite prices.’

To see all Fastmarkets’ pricing methodology and specification documents, go to


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