Ages for Quartz at Fanny Fern Mine (Mayday Lode; J. C. Lode; Springfield; Unpatented Claims: Fanny Fern No. 2; Patented Claim: Fanny Fern; MS 699; B. R. Lode), Lake City District (Lake District), Hinsdale Co., Colorado, USA

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 30.5Ma - 17.8Ma at this locality

• Locality age (remote)

• Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
  Kristen001957	23.1	23.1				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001958	29	29				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001959	30.5	27.5				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001960	29.5	27.5				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001961	24.1	22.1				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001962	19.8	17.8				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001963	28	27				3642	Golden Fleece Mine, Lake City, Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001964	30.1	27.5				3642	Golden Fleece Mine, Lake City, Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001965	28.5	27.1				5591	Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410
  Kristen001966	21.2	20.4				7754	Oulay Mine (Ulay Mine; Ute-Ulay Mine), Lake City, Lake City District (Lake District), Hinsdale Co., Colorado, USA	Hon et al. (1985)	EG80_410