BAILEY. | Chemistry of Gypsum. Alays: 
Another sample from this locality contained 18.69 per cent. of 
insoluble matter and silica and 6.10 per cent. of calcium carbon- 
ate, but from a knowledge of the composition of a large number 
of other samples from the same deposit, the amount of insolu- 
ble material is evidently too high to represent the average. 
GYPSITE FROM THE TINKLER DEPOSIT. 
One sample of the crude material from this farm was an- 
alyzed.” It was formerly used at the mill in Gypsum City. 
The analysis is as follows: 
Silicayandansolubleyresiducmans serie eines 4.54 
Loin axe! allonamTinwiID, OLACWS. boo c090b0d00d50cH0d0000600 0.54 
Wal cio xtc C Maen ae Mie Miah ounten RNS clam Nunla i kntann ain a4 Sy) ail 
Mia ones iUIMEOX COMET yd oe ee kha Crane) a) cata: 0.28 
SOMO MEMO GralohyCWKClS sooo bdvo dove esoododouo odes so ouoe ad 42.10 
Carbonidioxiden(calculated) harem oman ec anenane 2.54 
NIUE UTETO a suas csc ee tts Re ROR ree 17.82 
A DORAN i Ss shh Sige eA ole yo Ste eT cH ae A ee 100.13 
Calculating the above constituents as they probably exist in 
the rock, the result would be: 
Silica and insoluble residue............ ea AA EN Waa has 4.54 
irongandtalumumunimoxic esha ore eens eee 0.54 
Maomesiumycarbonatem en m aeemnr oe aie tase kia 0.59 
Calcium¥carbonatemrmc cy eriy scsi av coe raenn a tise e int, 5.07 
Calciumysuliphatean wri oh isch Sere Manoel a Mk: TL BO 
MIPEMRED BANS hs "acs! sla NOS eNle el es a RU NO Te Og 17.82 
SRO Lalli em Hi rk cl Laka nin a aN Neti 100.13 
The following analyses * have been made of the crude gypsite 
manufactured in Gypsum City by the Acme Company in 1892: 
Center of bed, Quick 
Surf ! 
bape Ir | Stolags |e iiss 
Silica and insoluble residue ... 13.50 7.65 3.62 15.08 
Iron and aluminum oxides .... 1.05 0.52 0.45 0.44 
Magnesium carbonate......... 0.76 0.63 0.34 7.02 
Calcimmrcarbonateeen een 7.50 8.11 4.09 j 
Calciumysulphatesss ee. 60.27 64.72 71.94 60. 34 
Wie Ce renee arate tn nace Am Met ivan ny? 17.05 18.39 19.87 17.46 
AO Getl Sharer baller Sane ete atu © C0518 100.02 100.31 100.51 
85. Analysis by Bailey and Whitten. 
86. Analysis by Paul Wilkinson. 
