1
Supplementary Information for
Accidental synthesis of a previously unknown quasicrystal in
the first atomic bomb test
Luca Bindi
a
, William Kolb
b
, G. Nelson Eby
c
, Paul D. Asimow
d
, Terry C. Wallace
e
,
Paul J. Steinhardt
f,*
a
Dipartimento di Scienze della Terra, Università di Firenze, Via
La Pira 4, Florence, I-50121, Italy;
b
2702 Church Creek Ln, Edgewater, MD-21037, USA;
c
Department of Environmental Earth and
Atmospheric Sciences, University of Massachusetts, Lowell, MA-0
1854, USA;
d
Division of
Geological and Planetary Sciences, California Institute of Tech
nology, Pasadena, CA-91125,
USA;
e
Los Alamos National Laboratory, Los Alamos, NM-87545, USA;
f
Department of Physics,
Princeton University, Jadwin Hall, Princeton, NJ-08544, USA. *c
orresponding author
2
Figure S1.
Back-scattered electron scanning electron image of the studied
trinitite sample. The
small bright grain enclosed in the red dashed circle contains t
he quasicrystal. Electron
microprobe spot analyses are indicated.
3
Table S1.
Electron microprobe analyses of the spots indicated in Fig. S1.
1
2
3
4
5
SiO
2
72.52
69.62
69.52
66.31
69.08
Al
2
O
3
12.77
18.4
18.35
18.22
13.51
CaO
8.68
n.d.
n.d.
n.d.
8.9
Na
2
O
0.05
n.d.
n.d.
n.d.
2.47
K
2
O
5.92
11.9
11.89
15.41
5.88
Total
99.94
99.92
99.76
99.94
99.84
Note: n.d. = not determined, Major and minor elements were dete
rmined using a JEOL JXA-8600
electron microprobe at 15 kV accelerating voltage and 40 nA bea
m current (and a 1
μ
m beam
diameter), with 30 s as counting times. The standards used were
diopside (Ca), sanidine (K) and
albite (Na, Al, Si).