PHOSPHORITES OF SPAIN. 59 
[IV to VII. Logrosan phosphate, by Dr. C. U. Shepard, jr., and Dr. Warner.] 
IV. White 
and hard. 
36. 97 
80.71 
12.63 
V. Yellow 
ish white 
and hard. 
VI. Ros> 
while and 
compact. 
VII. White, 
soft, and 
manamillary. 
Phosphoric acid 
37. ~>r< 
82. 97 
7.40 
42.17 
92.06 
Trace 
41.72 
91.(1!) 
4.32 
Equal bone phosphate 
Sand and insoluble matter 
[VIII to XIV. Caceres phosphate, by Dr. C. U. Shepard, jr., and Dr. Warner. | 
VIII. Eosy 
and pulver- 
ulent. 
T3 +5 
a « 
M C 
« 6 
S 1 
.2 
°3 
• g 
PI 
<1 
27.00 
58.94 
3.76 
. • .3.0 
37. 38 
81.60 
3.40 
32.06 
69.99 
22.97 
38.07 
83.11 
6.30 
29.09 
63.50 
2.70 
39.07 
85.29 
9.19 
36.18 
78.98 
Trace 
Equal bone phosphate ... 
[XV. Caceres phosphate, by Bobierre and Friedel.] 
Insoluble siliceous matter 21. 05 
Water expelled at red lieat 3. 00 
Tribasic phosphate of lime 72. 10 
Loss, oxide of iron, etc 3.85 
100. 00 
[XVI. Phosphate from Montanchez, by Bobierre and Friedel. 1 
Tribasic phosphate of lime . . . > 85. 03 
Carbonate of lime 10. 35 
Water expelled at red heat 2. 40 
Silica, oxide of iron, etc 2. 22 
100. 00 
Phosphorites include, besides those deposits already mentioned under 
that heading, the minerals staffelite, epiphosphorite, pyrophosphorite, 
eupyrehroite, hydro-apatite, monite, monetite, and other forms, all of 
which occur either in scattered pockets, incrustations, and concretions, 
or as radiated, botryoidal, and subcrystalline masses. Some of them 
occur scattered through certain i^hosphorites and rock phosphates, and 
are mentioned in connection with those deposits. They are rarely of 
any commercial importance. 
Fibrous and concretionary phosphorites have been mined in small 
quantities at Amber g, Bavaria. 
Thin seams of soft, whitish phosphorite, called osteolite, occur at Ha- 
nau, in Germany, but, as yet, the mineral has not been found there in 
sufficient quantities to be of commercial value. 
ROCK PHOSPHATES. 
This class of phosphates includes, as already mentioned, those de- 
posits which, having no definite chemical composition and lacking the 
homogeneous nature and other fixed characteristics of a true mineral, 
" (533) 
