Bondoc (MES-B4)

Country:	Philippines
State/District:	Luzon, Bondoc Peninsula
Coordinates:	13°31'N, 122°27'E
Date of fall/find:	Found 1956
Total known weight:	888.6 kg
Number of pieces:	1
Type:	Mesosiderite, subgroup B4
Shock stage:	S1/2
Mineral analyses:	Olivine Fa16-17
Pairings:	not known
Synonyms:	Bondoc Peninsula
Description:	A single mass of 888.6kg and a few smaller masses were found, A.L.Graham et al., Cat. Met., 1985, p.77. A specimen was received by H.H.Nininger in 1962, Met. Bull., 1962, (25), H.H.Nininger, Science, 1963, 139, p.345. Pb isotopic composition, R.R.Marshall, GCA, 1968, 32, p.1013. Metallography, B.N.Powell, GCA, 1969, 33, p.789. Silicate mineralogy, B.N.Powell, GCA, 1971, 35, p.5. Unshocked, A.V.Jain and M.E.Lipschutz, Nature, 1973, 242, (Phys. Sci.), p.26. Analysis of metal, 7.3% Ni, 15.6 ppm Ga, 48 ppm Ge, 3.8 ppm Ir, J.T.Wasson et al., GCA, 1974, 38, p.135. Noble gas and Cl-36 contents, F.Begemann et al., GCA, 1976, 40, p.353. Fission track age, 140±40 Ma, E.A.Carver and E.Anders, GCA, 1976, 40, p.467. Fission track data, R.K.Bull and S.A.Durrani, Meteoritics, 1979, 14, p.362 (abs.); G.Crozaz and D.R.Tasker, GCA, 1981, 45, p.2037. Exposure age based on spallogenic Mn-53 content, P.Englert and W.Herr, GCA, 1978, 42, p.1635. Composition of olivine and matrix orthopyroxene, C.E.Nehru et al., GCA, 1980, 44, p.1103. Calculation of atmospheric ablation based on cosmic ray tracks and Ne isotopes, N.Bhandari et al., Nucl. Tracks, 1980, 4, p.213. Oxygen fugacity estimations, W.N.Agosto, LPSC, 1981, 12, p.3 (abs.). Hydrogen and carbon isotopic composition of acid residues, J.Yang and S.Epstein, GCA, 1983, 47, p.2199. Subgroup classification, poikilitic, containing melt matrix, R.H.Hewins, J. Geophys. Res., 1984, 89 (suppl.), p.C289. Ar-Ar age 3.59 Ga, D.D.Bogard et al., GCA, 1990, 54, p.2549; see also, LPSC, 1988, 19, p.112 (abs.). Composition of large metal nodules, J.Hassanzadeh et al., GCA, 1990, 54, p.3197. Mg isotopic composition of plagioclase, M.T.Bernius et al., LPSC, 1991, 22, p.93 (abs.). Major, minor and trace element composition of igneous clasts, A.E.Rubin and D.W.Mittlefehldt, GCA, 1992, 56, p.827. Cosmogenic radionuclides data of metal and silicate, A.Albrecht et al., LPSC, 1992, 23, p.5 (abs.). Determination of low-temperature cooling rates by X-ray diffraction, J.Ganguly et al, LPSC, 1993, 24, p.519 (abs.). Calculation of cooling rates from compositional zoning and Fe-Mg ordering in orthopyroxenes, J.Ganguly et al., GCA, 1994, 58, p.2711. Thermal and shock history, shock stage S1/2, H.Haack et al., GCA, 1996, 60, p.2609. Chlorine abundance, D.H.Garrison et al., MAPS, 2000, 35, p.419. Cosmogenic radionuclide data, A.Albrecht et al., MAPS, 2000, 35, p.975.

The Meteoritical Bulletin Database record for Bondoc

All specimens of Bondoc

	Bondoc (MES-B4)	Philippines Found 1956	One side polished slice Size: 6.5 x 4.5 x 0.5cm Weight: 33.6gr	US$ 100.00
	Bondoc (MES-B4)	Philippines Found 1956	One side polished slice Size: 9.5 x 6 x 0.5cm Weight: 59gr	US$ 180.00