ENUntitled Page 28
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Status: Needs Review
=24= symbols see II p 22.
| number | Mineral + cryst syst etc | Composition, descript. etc | old numbr O.N. + S.C. |
|---|---|---|---|
| - - - - - - - | - - - - - - - | - - - - - - - | - - - - - - - |
| C 239 | Native Silver Isom. | Ag. with some black tarnish - flat mossy. | O.N 1180 |
| C 240 | " " vein | Ag - in sandstone - - thicker + dark layer fizz - carbonate [Is.] | ON 73 or 74 |
| C 241 a+b (a) 3 spec | [C + yolite] prism. cl. (a) monoclinic "ice stone" | (a) Na3AlF6 white - often pseudocubic Cl. [fasal 001], and 110 almost ⟂ massive | p. |
| C 241 b | " (b) prismatic " 2/3 | (b) " large spec. | O.N. 963 |
| C 242 | Corundum Hex - R. scalenohedral, | Al2O3 32/m, H=9. [Hematite group] ( includes also Ilmenite Dana's min syst. [VII Fd] 1951 pp 520-527 pyrite, teldspar cut-surface-(hand spec) | O.N - Foote Phila 231 (176) 2 [stpia] |
| C 243 | " Hex R " | " crystals, barrel-shape-prisms H=9, G=4.0 few-rhombuhedron faces (1011) | 11 specs |
| C 244a | Corundum " | " H=9.0 - large crystal - Hex. rhombic parting striations ⟂ and [△] 60° | |
| C 245 | Bauxite amorph mineraloid | Al2O3 etc pisolitic - dull earthy - hematitic [red] frags. | 2 |
| C 246 | " " | Al2O3 + [n? h?] H2O +FeO(OH) + Fe2O3, Fe[I][2]O4 cream color - pisolitic. | ___ |
| C 247 | " " | " brownish (Fe2O3) pisolitic - concret. mixt of gibbsite and diaspore | ___ |
| C 248 | nepheline-Syenite rock | source of Ark. Bauxite - fresh - unweathered weathered to # C247. | ___ |
| C 249 | Gibbsite | ||
| C 250 | Emery - natural famous abasive earlier 18? 19 | {mixture of Al2O3, Fe3O4 (+ Fe2O3 + FeAl2O4) (Hercynite) massive blue-gray-fine grained. contains corundum, megnetite, hematite?, Hercynite + spinel - mg oxide (MgAl2O[4]) | |
| C 251 | Al. metal _ Bar-Al man-made | Alloy - 4% Cu, 50% Mg, 6% Mn, +Fe, +Si | S.C. 662 |
| C 251 a | (nail) for aircraft etc | C251a [=] Al. nail - very light, does not corrode | 800 ? |
| C 252 | Alunite, Hex. "Alum stone ditrigonal scaleno. Cl | KAl3(OH)6(SO4)[2] - pinkish. cream, massive K2O= 11.4%, Al2O3=37% SO3=38.6%, H2O=13% | 152 |
| C 252 a | Alunite " | " " " | " " |
| C 253 | Halite ("rock salt") Isom. cubic | NaCl Salt Dome, Transparent - cubic (rough) Sp.6=2.1 | ___ |
| C 254 | " (4 sp.) " | " crystals some pseudo. orthorh. shape Transp. - some with air? bubbles | 4. Spec. ? |
| C 255 | Halite " | cubic - Transp. with liquid bubble in air bubble - (arrows) | S.C 2042 |
| C 256 | " " " | " massive - gray - pink - li. yellowish - [tone] | 3 specs |
| C 257 | Carnallite ( 3 specs ) [Orthorh.] dipyramidal. | KClMgCl2(H2O)6 pink, crystalline, deliquesces, massive |
Notes and Questions
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Wow this person really needs to get a new journal :/ They can't squeeze everything in the rows so they have to draw all of these lines and brackets to keep the rows in order ( -_-)
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