当日発送
送料無料

最安値挑戦！【隕石】 NWA 13758【ルムルチコンドライト】隕石

お気に入りブランド

クチコミ評価 5.4（2854件）

販売価格：: ￥6800税込
獲得ポイント：: ポイント

商品がカートに追加されました

販売価格：￥6800 税込

お買い物を続けるカートへ進む

在庫あり

※ 商品のお届けについてはこちらよりご確認ください。

SHOPPING が販売、発送いたします。

当日発送可 (14:00までのご注文が対象)

※
ご注文内容・出荷状況によっては当日発送できない場合もございます。
詳しくはこちらよりご確認ください。

利用可

※
ポストにお届け / 一点のみ購入でご利用可能です。
ゆうパケットでのお届けの場合はサンプル・ノベルティが対象外となります。
ゆうパケットには破損・紛失の保証はございません。
詳しくはこちらよりご確認ください。

商品の詳細

こちらは2017年にアルジェリアのAdrarで発見されたNWA 13758の隕石です。

隕石の種類はルムルチコンドライト（R3）です。詳細については以下の表のとおりです。

スライスされた標本ですので4.9cm×3.7cm×0.15cm，重量は7.28gとなります。

写真の1枚目と2枚目はスキャナで撮ったものです。(白い糸状のものは，保管ケースのワタがスキャナに付いてしまったものです。暗色の隕石のため目立ってしまいました。)

Northwest Africa 13758

Basic information

Name: Northwest Africa 13758
This is an OFFICIAL meteorite name.
Abbreviation: NWA 13758
Observed fall: No
Year found: 2017
Country: Algeria
Mass: 100 kg

Classification
history:

Recommended:

This is 1 of 47 approved meteorites classified as R3.

Comments:

Approved 8 Apr 2021

Writeup

Writeup from MB 110:

Northwest Africa 13758 (NWA 13758)

Adrar, Algeria

Purchased: 2017

Classification: Rumuruti chondrite (R3)

History: A large group of identically appearing stones, found together, was purchased by a Saharan dealer from a nomad in Algeria and was subsequently acquired by Mark Lyon and Dustin Dickens. The original find was reportedly in the Tanezrouft Plateau, with the nearest town being Reggane, Algeria.

Physical characteristics: Approximately 500 pieces ranging in mass from <1 kg to >5 kg, with a total known weight of approximately 100 kg. Dark brown sandblasted exterior. Saw cut reveals a breccia with fragments up to ~2 cm set in a fine-grained matrix. Abundant distinct chondrules are visible throughout. Two main lithologic domains exist within this meteorite, one has a gray, unstained matrix, and the second has a brownish-orange-stained matrix.

Petrography: (C. Agee, UNM) Chondrite with mean apparent chondrule size 350±240 m (n=21) set in abundant matrix (~35 vol%). Electron microprobe analyses were performed separately on the two main lithologic domains. Domain "A" has compositionally unequilibrated olivine and pyroxene both in chondrules as well as single mineral fragments in the matrix. Very small grains of albitic plagioclase are present. Chromite, pentlandite, and troilite are ubiquitous. No metal or oxidized iron was detected. Domain "B" has compositionally unequilibrated olivine and pyroxene both in chondrules as well as single mineral fragments in the matrix. Domain "B" appears to have slightly more chondrules than domain "A". Very small grains of albitic plagioclase were present. Ti-rich chromite, pentlandite, and Ni-bearing troilite are ubiquitous. No metal or oxidized iron was detected.

Geochemistry: (C. Agee, UNM) Domain "A": olivine Fa36.6±8.4, CV=23%, Fe/Mn=83±15, n=12; low-Ca pyroxene Fs21.4±6.8Wo0.9±0.5, Fe/Mn=39±19, n=4; augite Fs8.8±0.7Wo46.0±0.2, Fe/Mn=43±4, n=2; plagioclase An8.8±0.6Ab86.5±0.2Or4.7±0.7, n=3. Domain "B": olivine Fa38.7±5.8, CV=15%, Fe/Mn=87±10, n=12; low-Ca pyroxene Fs10.0±7.7Wo2.0±1.8, Fe/Mn=15±7, n=4; augite Fs11.4±0.9Wo44.8±1.3, Fe/Mn=51±11, n=2; plagioclase An9.2±0.9Ab85.9±1.6Or4.9±0.8, n=3.

Classification: Rumuruti chondrite (R3). Domain "A" is approximately R3.7 and domain "B" is approximately R3.9, based on olivine coefficient of variation (CV)

Specimens: 1127.72 g complete stone, and a 57.69 g full slice from a different complete stone, are on deposit at UNM. Mark Lyon holds the main mass including a total of 14 pieces weighing 19.84 kg, Dustin Dickens holds ~60 kg of medium to small stones.

Bibliography:

Bischoff, A. (2000) Mineralogical characterization of primitive, type-3 lithologies in Rumuruti chondrites. Meteorit. Planet. Sci. 35 699-706

Data from:
  MB110
  Table 0
  Line 0:

State/Prov/County:	Adrar
Origin or pseudonym:	Tanezrouft
Place of purchase:	Algeria
Date:	P 2017
Mass (g):	100000
Pieces:	500
Class:	R3
Shock stage:	S2
Weathering grade:	W1
Fayalite (mol%):	36.6±8.4, 38.7±5.8
Ferrosilite (mol%):	21.4±6.8, 10.0±7.7
Wollastonite (mol%):	0.9±0.5, 2.0±1.8
Classifier:	C. Agee, UNM
Type spec mass (g):	1185.41
Type spec location:	UNM
Main mass:	Mark Lyon
Comments:	Submitted by C. Agee