Monthly Tech-Tip from Tony Hansen SignUp

No tracking! No ads!

1-9 | A | B | C | D | E | F | Frits | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z


Alternate Names: Dolowhite Select 200

Description: White burning Dolomite, CaMg(CO3)2

Oxide Analysis Formula
SiO2 0.55% 0.01
Fe2O3 0.15% -
MnO 0.04% -
Al2O3 0.07% -
CaO 31.35% 0.52
MgO 20.80% 0.48
LOI 46.50%n/a
Oxide Weight 49.27
Formula Weight 92.09


Full name is Dolowhite Select 200, it is considered a high purity dolomite and is popular in North America. It is 54.9% calcium carbonate and 42.4 magnesium carbonate.

It is available in many sizes from 20-400 mesh. The 200 grade typically has 0.1% retained on 100 mesh, 1% on 140 mesh and 7% on 200 mesh.

The manufacturer is Lhoist (pronounced Lwost), they are a limestone producer based in Belgium. This product is produced in Salinas, CA.

Related Information


Materials Dolocron 40-13
Materials Dolomite
An inexpensive source of MgO and CaO for ceramic glazes, also a highly refractory material when fired in the absence of reactant fluxes.
Materials Camadil 95 Dolomite
Typecodes Flux Source
Materials that source Na2O, K2O, Li2O, CaO, MgO and other fluxes but are not feldspars or frits. Remember that materials can be flux sources but also perform many other roles. For example, talc is a flux in high temperature glazes, but a matting agent in low temperatures ones. It can also be a flux, a filler and an expansion increaser in bodies.
By Tony Hansen
Follow me on

Got a Question?

Buy me a coffee and we can talk, All Rights Reserved
Privacy Policy