PROPERTIES    AND    TESTS    OF    FULLER  7S    EARTH. 
269 
Table  1. — Minerals  likely  to  be  found  in  fuller's  earth. 
MINERALS  OF  CLAYS  AND  SOILS. 
Name. 
Muscovite . . . 
Biotite 
Phlogopite . . . 
Pectolite 
Laumontite. . 
Prehnite 
Natrolite 
Analcite 
Datolite 
Chabazite 
Stilbite 
Heuland ite . . . 
Orthoclase. .. 
Microcline. . . 
Albite 
Oligoclase 
Labradorite . . 
Anorthite 
Hornblende . . 
Tremolite 
Actinolite 
Glaucophane. 
Diailage 
Enstatite 
Hypersthene . 
Jeilerisite 
Ripidolite 
Penninite 
Prochlorite. . 
Spinel 
Hydrargillite. 
Bauxite 
Diaspore 
Quartz 
Opal 
Calcite 
Dolomite 
Gypsum 
Apatite 
Marcasite 
Pyrite 
Limonite 
Magnetite.... 
Hematite.... 
Siderite 
Rutile 
Ilmenite 
Pyrolusite.. . 
Olivine 
Vesuvianite . . 
Epidote 
Zoisite 
Allanite 
Andalusite... 
Staurolite 
Fibrolite..... 
Cyanite 
Scapolite 
Nepheline 
Talc 
Serpentine. . . 
Wollastonite. 
Specific    Hard- 
gravity,    ness. 
4.80 
4.80 
3.30 
3.40 
3.30 
3.30 
4.00 
3.20 
3.70 
3.20 
3.eo 
2.70 
2.60 
2.80 
2.  60 
2.90 
2.00 
2.50 
2. 50 
5.00 
6.00 
5.00 
5.00 
5.00 
4.50 
3.50 
3.50 
6.00 
6.00 
6.00 
6.00 
5.00 
6.00 
6.00 
6.00 
6.00 
6. 00 
5. 50 
6.00 
2.00 
2.00 
8.00 
2.00 
7.00 
7.00 
6.00 
3.00 
3.50 
2.30 
5.  00 
6. 00 
6.00 
3.00 
6.00 
3.00 
3.50 
6.00 
5.  50 
2.00 
6.50 
6.50 
6.50 
6.00 
5.50 
3.00 
7.00 
6.00 
6.00 
6.00 
6.00 
1.00 
3.00 
4.  50 
Crystallization. 
Monoclinic. 
....do 
....do 
....do 
Orthorhombic. 
do 
Isometric 
Monoclinic 
Hexagonal 
Monoclinic 
do 
do 
Triclinic 
do 
do 
do 
do 
Monoclinic 
....do 
....do 
...-.do 
Orthorhombic . 
....do 
Monoclinic. 
....do 
Effect  of  acids. 
Not  attacked . 
Decomposed  by  HC1 
do 
Partly  decomposed  by  acid 
Decomposed  by  H20  and  acid . 
Decomposed  by  HC1 
Decomposed  by  HC1. 
do 
Insoluble 
Not  attacked 
Slightly  attacked 
do 
Decomposed  by  HC1. 
Slightly  attacked 
do 
....do 
Amorphous 
Orthorhombic. 
Hexagonal 
Amorphous 
Hexagonal 
do 
Monoclinic 
Hexagonal 
Orthorhombic . 
Isometric 
Amorphous 
Isometric 
Hexagonal 
do 
Tetragonal 
Soluble  in  HC1  and  H2SO<. 
Hexagonal 
Orthorbombic. 
....do 
Tetragonal 
Monoclinic 
Orthorhombic. 
Monoclinic 
Ortborhombic. 
....do 
....do 
Triclinic 
Tetragonal 
Ilexoganal 
Monoclinic 
....do 
....do 
Insoluble  in  acids. 
Not  attacked 
Soluble. 
....do.. 
Soluble 
Insoluble 
....do 
Soluble 
Slowly  soluble 
Soluble 
....do 
Insoluble  except  after  long  concen- 
tration in  H2SO4. 
Soluble 
Decomposed  by  HC1  and  H2SO4 
Partly  decomposed  by  HC1 
Slightly  attacked  by  IIC1 
Partly  decomposed  by  HC1 
Insoluble  in  acids. 
Not  attacked 
Insoluble  in  acids. 
Decomposed  by  HC1 . . 
Not  attacked 
Decomposed  by  acids. 
Decomposed  by  IIC1. , 
Author- 
ity.« 
A,  B 
A. 
A. 
A,  B 
B. 
A,  B 
A,  B 
A,  B 
A. 
A. 
A,  B 
A,  B 
A,  B 
A. 
A,  B 
A,  B 
A. 
A,  B 
A,  B 
A,  B 
A,  B 
A. 
A. 
A. 
A. 
A. 
A. 
B. 
A. 
A,  B. 
A,  B. 
A. 
A. 
A. 
A. 
A. 
A. 
A. 
A. 
A. 
A. 
A. 
A,  B. 
A. 
A. 
A,  B. 
A,  B. 
A,  B. 
B,  C. 
A. 
A,  B. 
A,  B. 
A. 
A,  B. 
C. 
B,  C. 
B,  C. 
B.C. 
B,  C. 
aA=Eakle,   A.  S.,  Mineral  Tables, 
J.  D.,  Manual  of  Mineralogy,  1857. 
1904.     B  =  Comey,  A.  M.,  Dictionary  of  Solubilities.    0—  Dana, 
Bull.  315—07- 
-18 
