Smokable product with meerschaum particles

Claim 1

In a smokable tobacco product having a paper cover and having meerschaum particles as an adsorbent, the improvement which comprises employing as the paper cover, a paper admixed with meerschaum particles having a diameter of 100 microns or less, said meerschaum particles consisting of breccia-like porous meerschaum which does not disintegrate in boiling nitric acid 1:1 but is soluble therein at the most 2/3 and which during heating to 300° C has a weight loss of at most 15% by weight and which has a magnesium content of at least 5% by weight based on the dry substance, which breccia-like porous meerschaum on account of its greater hardness scratches non-breccia like meerschaum and the density thereof, measured at the air-dried section, is about 1.2 g/cm 3 compared with non-breccia-like meerschaum, the density of which measured under the same conditions, is between about 0.5 and 0.6 g/cm 2 and which breccia-like porous meerschaum has a surface of at least 100 m 2 /g, said breccia-like porous meerschaum consisting essentially of the fine waste which results from granulating breccia-like porous meerschaum to obtain a range of 0.1 to 5 millimeters diameter, said breccia-like porous meerschaum being present in said paper in an amount effective to selectively adsorb polar harmful substances in tobacco smoke.