Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Minamiboso City, Chiba, Japan

Oldest recorded age at locality: 23
Youngest recorded age at locality: 16

mindat Locality ID: 204596
mindat URL: http://www.mindat.org/loc-204596.html

Tectonic Settings:

Total number of sublocalities beneath "Minamiboso City, Chiba, Japan": 6
Total number of bottom-level sublocalities: 4

Number of Child Localities: 4
Child Localities:
Arakawa
Heguri-naka
Tomiyama-machi
Wada-machi

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amorphous	Calcite	Chevkinite	Corundum	Feldspar	None	Pectolite	Quartz	Tobermorite

Anorthite ()*	Bosoite ()*	Calcite ()*	Chevkinite-(Ce) ()*	Chibaite ()*
Hematite ()*	Ilmenite ()*	Melanophlogite ()*	Opal ()*	Pectolite ()*
Quartz ()*	Siderite ()*	Tobermorite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al C Ca Ce Fe H Na O Si Ti

Elements from minerals reported directly at this locality: Ce Fe O Si Ti

Structural Groups for minerals in this locality:
Amorphous Calcite Chevkinite Corundum Feldspar None Pectolite Quartz Tobermorite

13 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)			1	74060	1036
Bosoite ()*	None	SiO₂·nC_xH_2x+2	23	16	1	74055	1
Calcite ()*	Calcite	Ca(CO₃)	23	16	1	74055	27770
Chevkinite-(Ce) ()*	Chevkinite	Ce₄(Ti,Fe²⁺,Fe³⁺)₅O₈(Si₂O₇)₂	23	16	0		89
Chibaite ()*	None	SiO₂·n(CH₄,C₂H₆,C₃H₈,C₄H₁₀) (n_max = 3/17)	23	16	1	74055	1
Hematite ()*	Corundum	Fe₂O₃			1	74056	14640
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃			1	74058	5433
Melanophlogite ()*	None	C₂H₁₇O₅·Si₄₆O₉₂	23	16	1	74055	38
Opal ()*	Amorphous	SiO₂·nH₂O	23	16	1	74055	2994
Pectolite ()*	Pectolite	NaCa₂Si₃O₈(OH)			1	74058	363
Quartz ()*	Quartz	SiO₂	23	16	1	74055	61156
Siderite ()*	Calcite	Fe(CO₃)	23	16	3	74055,74056,74060	6417
Tobermorite ()*	Tobermorite	Ca₄Si₆O₁₇(H₂O)₂·(Ca·3H₂O)			1	74058	114

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_0035	Veins in tuffaceous sandstone and mudstone in forearc basin of the Paleo-Izu arc and triple junction of Pacific, Philippine Sea and North America plates

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Michelle_0035	23	16	23-16	stratigraphy	Age of vein mineralization									204597	Arakawa, Minamiboso City, Chiba, Japan	Arakawa	Momma et al. (2011)	10.1038/ncomms1196	NC2_196	Veins occur in the tuffaceous sandstone and mudstone after sedimentation. Bosoite is unnamed in cited article but was submitted in 2014 as a new mineral. See ref from ref.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...