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Re: Tautouine (sp.?) & Tolluca

Varricchio, Louis schrieb:

> Can anyone please supply me with technical details about the Tautouine
> (sp.?) diogenite and Toluca iron? Thanks!
> Lou Varricchio

Hello Lou, hello List!

1) Tatahouine (ADIO), Ca-poor; HED
Foum Tatahouine, Tunisia
32° 57' N / 010° 25’ E
Fell 1931, June 27, 01:30 hrs

3.5 kg, Paris, Mus. d'Hist. Nat.  183 g, Chicago, Field Mus. Nat. Hist.
137 g, Calcutta, Mus. Geol. Surv. India. BM London, 118 g (and
fragments, 6 g).

Fragments fell over a radius of 500 m, 4 km NE. of the village; 12kg
were collected, mostly in minute fragments. Description, analysis, A.
Lacroix, C.R. Acad. Sci. Paris, 1931, 193, p.305 (M.A. 5-10), A.
Lacroix, Bull. Soc.franc. Min. Crist., 1932, 55, p.101 (M.A. 5-298).

J.A. Barrat et al. (1998) Formation of carbonates in the Tatahouine
meteorite (SCIENCE, 1998, Vol.280, No.5362, pp.412-414):

The Tatahouine meteorite, in southern Tunisia, shows terrestrial
contamination that developed during 63 years of exposure on Earth's
surface. Samples collected on the day of the fall in 1931 contained
fractures, with no secondary minerals, whereas samples collected in 1994
contain calcite aggregates (70 to 150 micrometers) and rod-shaped forms
(100 to 600 nanometers in length and 70 to 80 nanometers in diameter) on
the fractures. Carbon isotope analysis of the carbonates within the
Tatahouine meteorite [delta(13)C = -2.0 per mil Pee Dee belemnite
standard (PDB)] and the underlying ground (delta(13)C = -3.2 per mil
PDB) confirm their terrestrial origin.

2) Toluca, Iron, IA
Xiquipilco, Mexico
19° 34' N / 099° 34' W
Find 1776 but known before this year
Analysis: 8.31 %Ni, 8.05 %Ni, 8.07 %Ni, 70.6 ppm.Ga, 246 ppm.Ge, 1.8
ppm.Ir

535kg, Mexico City, Inst. Geol. (includes main mass, 400kg). 353kg, Fort
Worth, Texas, Monnig Colln.   219kg, Chicago, Field Mus.Nat. Hist.
144kg, Tempe, Arizona State Univ.   200kg, Vienna, Naturhist.Mus. 114kg,
Hamburg. 109kg, Washington, U.S. Nat.Mus. 69kg, Nantes, Mus. d'Hist.Nat.
61kg, Bonn, Univ. Mus. 53.5kg, Budapest, 47.5kg, Nat. Mus. 6kg
Eötvös Lorand Univ. 43.5kg, Stockholm, Riksmus. 32kg, Prague, Nat. Mus.
21kg, Harvard Univ. 7kg, Paris, Mus.d'Hist.Nat. 9kg, New York, Amer.Mus.
Nat. Hist. 7.6kg, Naples, Univ. 6.2kg, Yale Univ. 4kg, SML. 6kg,
Albuquerque, Univ.New Mexico.  2kg, Copenhagen, Univ. Geol. Mus.
2.5kg, Sydney, Austr. Mus. 2kg, Philadelphia, Acad. Nat. Sci. 2.2kg,
Moscow, Acad. Sci., BM London,  99485g, 927g (and fragments, 12g), 472g
(seven fragments), 47g (a slice of the Abert Iron),  29.5g (and sawings,
2g, of Amates), 117.5g (turnings), 513g (and fragments, 6.5g), 994g (and
fragments, 11.5g of Tacubaya), 9g (of Tennant's Iron),  1026g (two
pieces), 62.3g (and fragments, 0.5g).

Many masses, the largest of 300lb, were found near Xiquipilco and were
being forged into agricultural equipment in 1776. Three masses of 220lb,
19.5lb, and 13lb were brought to Germany by G.A. Stein, F. Wöhler,
Sitzungsber.Akad. Wiss. Wien, Math.-naturwiss. Kl., 1856, 20, p.218.
Full bibliography, L. Fletcher, Min. Mag., 1890, 9, p.164. The Abert
Iron, a mass of about 456g, was found in the mineral collection of Col.
J.J. Abert and presented by his son to the U.S. Nat. Mus., Washington.
Partial analysis, determination of Ga, Au and Pd, 8.31 %Ni, E. Goldberg
et al., GCA, 1951, 2, p.1. Analysis, 8.05 %Ni, M.I. D'yakonova,
Meteoritika, 1958, 16, p.180 . Contains Odessa type silicate inclusions,
T.E. Bunch et al., Contr. Miner. Petrol., 1970, 25, p.297. Analysis of
metal, 8.07 %Ni, 70.6 ppm Ga, 246 ppm Ge, 1.8 ppm Ir, J.T. Wasson,
Icarus, 1970, 12, p.407. The chemical composition of Amates, Tacubaya
and Michigan is within experimental error of that given above, E.R.D.
Scott and J.T. Wasson, GCA, 1976, 40, p.103. K-Ar age of silicate, 4500
my., D. Bogard et al., Earth planet. Sci. Lett., 1968, 3, p.275. The
'Calvert' iron and B.M.[47192] differ chemically and structurally from
Toluca and are distinguished under 'Paneth's Iron' (q.v.). Description;
includes Tacubaya and Tennant's Iron, V.F. Buchwald, Iron Meteorites,
Univ. of California, 1975, p.1209.

Berthier (----) Analyse du fer meteorique de Toluca au Mexique (Ann.
Mines, 2d ser., Vol. 1, pp. 337-338).

Krantz (1857) Ueber Meteoreisen vom Tolucathal in Mexico
(Ann.Phys.Chem., Poggendorf, Bd. 101, pp. 152-153).

Wöhler (1856) Ueber das Meteoreisen von Toluca in Mexico (Sitzber. Wien.
Akad., Bd. 20, pp. 217-224).

von Reichenbach (----) Ueber die Meteoriten aus dem Tolucathal in Mexico
(Ann.Phys.Chem., Poggendorf, Bd. 102, pp. 621-265).

V.F. Buchwald (1975) Handbook of Iron Meteorites, Vol. 3., pp.
1209-1218.


Best wishes,

Bernd
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