.511 gram Villanueva Meteorite class H6 cut fragment - found in New Mexico 1974

Description

Villanueva
Basic information
Name:
Villanueva
This is an OFFICIAL meteorite name.
Abbreviation:
There is no official abbreviation for this meteorite.
Observed fall:
No
Year found:
1974
Country:
United States
Mass
2.28 kg
Classification
history:
Recommended:
H6
This is 1 of 6188 approved meteorites (plus 5 unapproved names) classified as H6.
Comments:
Approved 1 Nov 2020
Writeup
Writeup from MB 109:
Villanueva
35.238°N, 105.332°W
New Mexico, United States
Find: 1974
Classification: Ordinary chondrite (H6)
History
: Found by an anonymous (now deceased) person in 1974 about a mile southeast of where the Villa Nueva State Park is now located, southeast of Santa Fe, New Mexico. Some time later the man’s niece brought the specimen (in two pieces that fit together) to a mineral shop (Mama’s Minerals) in Albuquerque, New Mexico, where it was on display for many years. In November 2014 the smaller piece was acquired from the shop owner by Blaine
Reed
.
Petrography
: (A. Irving,
UWS
and P. Carpenter,
WUSL
) The specimen is extensively recrystallized with rare remnant chondrules. Primary kamacite has been partly altered to goethite and thin veinlets of reddish-brown goethite crosscut the studied thin section. Other accessory phases are sodic plagioclase, taenite, low-Ti chromite, troilite and merrillite.
Geochemistry
: Olivine (Fa
19.1±0.2
, range Fa
18.8-19.3
, N = 5), low-Ca pyroxene (Fs
16.7±0.2
Wo
1.5±0.2
, range Fs
16.5-16.9
Wo
1.3-1.8
, N = 4), augite (Fs
6.4±0.2
Wo
45.3±0.4
, range Fs
6.2-6.5
Wo
45.6-45.0
, N = 2). Magnetic susceptibility log χ (× 10
-9
m
3
/kg) = 4.88.
Classification
: Ordinary chondrite (H6).
Specimens
: 24.1 g including one polished thin section at
PSF
; 632 g with Mr. B.
Reed
; main mass with Ms. L. Randolph (Mama’s Minerals).
Data from:
MB109
Table 0
Line 0:
State/Prov/County:
New Mexico
Place of purchase:
Albuquerque
Date:
1974
Latitude:
35.238°N
Longitude:
105.332°W
Mass (g):
2278
Pieces:
1
Class:
H6
Shock stage:
S2
Weathering grade:
W2/3
Nice specimen for your collection.  Authenticity guaranteed.
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